C7 rough idle Result: Oil has been cleaned from the exhaust system but the white smoke did not dissipate. My A7 has 75,000 miles and I’m starting to notice a rough idle or a shiver when idling. When it is going thru the gears (in second) it feels like it is holding back. C7 of the Year - Unmodified Finalist 2021. 0 tdi; Audi Year: 2016; Posted March 22, 2023. I bring the car home, seemed fine. usually when the heui pump was failing it just died because the pump would not stay primed. Coming off the highway to a C3 Tech/Performance - 82 Crossfire Rough Idle - Just picked up an 82 Crossfire and it has a real rough idle. Last night, I started to investigate closer and I see arcing on the driver's side between the firewall and just below the valve cover. C7 General Discussion - Rough Idle - I'm a car guy but not a wrench, just enjoy driving it. i replaced the injectors because i C4 Tech/Performance - No power, rough idle,sputters,where to start - First, I just changed the MAF it was bad. 15,928 Satisfied Customers. i have replaced injection pressure sensor, both fuel filters, and two injectors. My question to u guys and gals, have I C7 Rough Idle . It has a little bit of a rough idle. Sauraus Discussion starter. Customer: After a regular service the engine runs rough during idle, and acceleration. Feels like a miss. - I'm sorry if this topic has been here before, I'm new to the forum. 5 S6 P+ Mythos Black [email protected] 103oct Stage 2 100 File/RACECHIP [email C4 Tech/Performance - No power, rough idle,sputters,where to start - First, I just changed the MAF it was bad. It does however idle a little rough, at around 550 rpms. My Cat is not in a motorhome, but an "05" M2 Freightliner that avgs 2600 miles/week. Pulled off dist. C7 of the Year - Modified Finalist 2021 A condition of running rough can be one of many factors. Looked at dash and Engine light was ON. Jude Co C5 Tech - Rough Idle! - Problem Solved And I Want To Share - Well, I am sure that a few of you guys have been following my aggraviation and know that I have been living with a rough idle and back firing and sluggish take-offs and well, I finally got this fixed! C7 of the Year - Modified Finalist 2021. I have a C7 ACERT in an M2 Freightliner and she runs pretty sweet. Engine runs rough like one or more cylinders aren't firing. Reactions: rdslon01. 3L, 5. 1,2, & 3, showed no obvious change in the idle. Some C8 Corvette owners experience occasional rough idle between frequent start stop cycles. The fuel economy dash data is not showing and running poorly. There is no lope if your reference is a performance cam. customer: cat c7 truck engine runs rough at idle ony has erratic iap, has heui pump with internal regulator. cat c7 truck engine runs rough at idle ony has erratic iap, has heui pump with internal regulator. Car has 50 000 miles and it's in very nice condition, however, the engine doesn't run smoothly at all. I have only had my C7 since 12/26 and I noticed the rough idle on the test drive. to/3eN0Op2 C7 Chevrolet Corvette with a big cam idle. It blamed the rough idle on the V4 mode being active at idle in a c7 automatic. Anyway, the cam I opted with is the Texas Speed Chopacabra 214/222 . The problem is after it has run for some time it starts to have a rough idle. - So far I've done a complete tune up including K&N air filter, fuel filter, cap & rotor, MSD wires AC Delco FR5LS plugs gapped @ 0. Wider angles tend to smooth out the idle while closer angles give it a rumpty-rump idle. C7. It doesn't kill but I can feel a miss and a C5 Tech - Rough idle and surging at low rpms - what could cause a rough idle and when sitting in traffic and moving at low rpms the car bucks and surges a bit. 00. It is especially bad after it has been driven for a while (over 30min or so). I noticed the tachometer needle jumping about 100 rpm's or so and could hear CAT C7 RUNNING ROUGH, HUGE BLACK SMOKE. C4 General Discussion - 1994 Corvette Rough Idle - New member to the forum and new corvette owner! Here's the story: My grandfather first started taking me to car shows when I was in middle school and he got me hooked on older vehicles. Its not annoying and I kind of like it. Seems low to me. Well, it's not a C7 to clear that up. A car this sophisticated and expensive I expected to be a bit smoother at idle. Originally the wiring underneath the passenger fender was destroyed from a tire blowing out. It will drive, and WOT pull just fine. C7 ACERT rough idle/miss after coasting. I simply did a search of "C9 Rough Idle beaver ambassadar" in google and guess what it pops up. C7 Tech/Performance - Off idle hesitation - Hi, I have a 2017 stingray, base engine with a stick shift. He said that all GM motors idle a little rough. 1491 February 16, 2021 Engine - Drivetrain 0 4. Any Ideas ? Still runs fine all the way to 6,000 RPM. I have done just about everything I can think of . I only have 3k miles on the car, but have noticed it has a off idle hesitation during any light throttle acceleration. To explain exactly what was happening, intermittantly when the motor had a load on it the idle would get rough and it sounded like a cylinder was shutting down for short periods. Car has 55K on it and I'm thinking it's prolly the original plugs in it. This c7 is rough. No driveability problems, I just have always wondered. 2th. 0 Oct 30, 2021 | 10:21 AM Share #12 taxableabe C6 Tech/Performance - Why does the LS2 have such a rough idle ? - I've had my 2007 Base LS2 to three shops, two private on one Stealership, ( who said they were more than able to diagnosis a rough idle only to now say there's nothing on the scanner and charge me $500. mine is the opposite, it doesn't idle rough when cold but once it warms up the RPMs go down it becomes rough. A letter in this month’s Corvette Magazine complained about C7 idle roughness. But it resets after I shut the car off. Cat Man. 0 TFSI Engine. I can feel a vibration in my 2020 - 2021 Corvette: Service Bulletin: #PIP5715B: Rough Idle With Misfire Counts On Random Cylinders - (Feb 15, 2021) Estimated Reading Time: 1 Minutes. In this article, we'll look at some of the most common causes of a rough idle in the Corvette and how to fix the problem. I disconnected and removed the maf extension harness and connected the Cat C7 rough idle. Seems to be worse when all the accessories are on, esp the heat/AC. This only happens when the engine is absolutely cold (early The truck has a rough idle and is slow to accelerate. Could be a low idle setting issue. Im new to corvettes, I just bought my 2016 Z51 with 2,000 miles. Intros; In Memoriam. 3126B this morning for a trip across the state to visit my sons college. This is the crap that drives me to drink, and C4 Tech/Performance - 95 LT1 Rough Idle - Hello all. C5 Tech - Rough Idle! - Problem Solved And I Want To Share - Well, I am sure that a few of you guys have been following my aggraviation and know that I have been living with a rough idle and back firing and sluggish take-offs and well, I finally got this fixed! C7 of the Year - Modified Finalist 2021. I also, installed C3 Tech/Performance - Rough Idle - Started to idle rough and hesitate/miss on acceleration. After 20 mile blast canyon carving the other day sitting at a light coming home, a distinct change in the idle and overall feel of the engine abruptly started. Thread Tools. It sounds rough and fuel pressure high at mid to high 90’s. Yesterday, I changed the oil, gased it up, and cleaned it. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 C4 Tech/Performance - 1988 TPI lack of power - rough idle - Please help - I have a 1988 TPI motor that had an intermitent Code 44 Lean Exhaust. Members; 5 First Name: Audi A6 (C7) Forum ; Rough Shifting Problem A6 C7 2016, DSG - 7 Speed What Causes Rough Idle? The most common cause of rough idle is a vacuum leak or a failed PCV valve. Then the “Service Axle,” “Service Stabilitrak,” and “Engine Power Reduced” It starts now but runs very rough. wondering if it should be closer to 700. I bought used w/183,000 miles. Hi guys. Motor mounts are intact, dealer said it's normal, like they always do. To the extent that I’d be concerned. The C7 idle "shakes" only in reference to a buttery smooth BMW or Cadillac. The car has been running fine for 2 weeks then out of no where C4 Tech/Performance - Rough Idle on a 1991 - Hello Everybody, I just joined your group and I am in search of someone who can help me out with a situation with my newly purchased 1991 convertible corvette. Started my 2003 KSDP with 330 HP Cat. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer C6 Corvette ZR1 & Z06 - Rough idle, power unaffected. It blamed the rough idle on the V4 mode being active at When started the idle is rough. If it's really missing, I think you'd notice it Is a ticking sound normal in a 2017 C7? I have a short video I could send. There is a tiny lope to them if your reference is an Accord's idle. 550 108+2 LSA. I checked, and Caroline idles The C7 fuel injection system is driven by oil pressure. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous Trailered it to Corvettes at Carlisle, came home, unloaded, parked for 2 weeks. C5 Tech - Rough Idle - I have a 2001 automatic with 33K miles, and it is idling much rougher that I would have expected. injector cutout test is good. Car has to be warmed up when you do it though. I even pulled the leads I have a S4 with the same 7 speed dsg box and it has a DMF noise when idling and I'm wondering if you ever had any thuds when upshifting through the gears? H11KUC. I had a local shop install some parts and the guy said the car had a miss to it, but it's always been running good performance At the first stop, I noticed the car had a very rough idle and the engine was searching for idle (rpms fluctuating everywhere). 25, 2024. 2023 C7 of the Year Finalist - Unmodified. 1985, 85, bad, codes, cold, corvette, ground, idiling, idle, idling C5 Tech - Newbie C5 rough idle issue - I just picked up a 1999 C5 convertible with 39k on the clock. It seems as though the ignition is breaking down as you hit certain RPM's (like flat spots). From what I have heard on other videos of C7 engines, as well as commented Subject: Rough Idle or Vibration Model and Year: 2014 - 2015 Corvette with RPO LT1 Engine Source: Chevrolet Service News Page Number: NA Date: October 8, 2014 On some 2014-2015 Corvette, Silverado, Sierra and 2015 Tahoe, Suburban, Yukon, Yukon XL and Escalade models equipped with the 4. Still there of course. 1 2. sure I don't have a leak I do know. 323 posts · Joined 2016 Add to quote A6 (C7 Platform) Discussion - Check Engine Light - Rough Idle - I cold Started my car and was idling unusually longer due to a message on my phone then all the sudden the car star roughly shaking 3-4 times. A6 (C7 Platform) Discussion - Vibration getting worse at idle - At 1100 rpms I'm getting a stronger and louder vibration somewhere near the front of the car. C5 Tech - rough and stalling at idle - my '03 starts fine. First vette for me and first at troubleshooting a LS type engine. cranking fuel pressure is at 15 psi. When going up hills I am in a lower gear than normal and its running about 20-30 mph less than normal. While I'm pretty. So 2004 Cat C7 Bucket Truck rough idle and excessive smoke from water temps between 130-180 degrees or so. Upon starting, the engine is displaying a very erratic idle on the rpm gauge and the sound of the engine confirms it is running erratically at an idle. I ran it for about 30 seconds before I started smelling a burning smell so shut it back off. 2L engine (RPOs L83, L86, LT1, LV3), Subject: Rough Idle or Vibration Model and Year: 2014 - 2015 Corvette Source: GM TechLink Page Number: NA Date: October 8, 2014 On some 2014 - 2015 Corvette, Silverado, Sierra and 2015 Tahoe, Suburban, Yukon, Yukon XL and Escalade models equipped with the 4. Now if if my foot is not on the gas and rpms are not above 1k, the car stalls. Same with the sucking sound from the large air C7 Tech/Performance - Rough Idle - 5,500 miles. Anyone else experiencing this? As for the idle. truck has 70k miles and doesnt get driven often. DISCLAIMER: Audiownersclub. Made it home - checked C4 Tech/Performance - 1988 rough idle when warm - Hey, anybody have any ideas the car has a rough idle when warm checked all the obvious when i try to disconnect the MAF car stalls. GM built the gentle lope into the idle to push enthusiasts' buttons. I didn't really notice the rough idle when I test drove it, maybe it was the convertible and the really nice day, either way I have to figure this out C4 Tech/Performance - New Opti, rough idle and pinging when started - I have a 92 coupe and i just replaced my optispark, and now it has a rough idle and pinging when i start it ( no codes are set). Reloaded, tailered to a show in Bowling Green, came home. During cold start the rpm stays at between 650 to 750. 24hrs installing. and at full throttle it is at 87psi. RPMs are jumping between 400 and 1000 until the needle settles at 800 after 30-40sec (see video). 0tdi, rough idle and shake for first 10 seconds after startup, and after 10 seconds works fine, if i unplug g247 fuel rail sensor it not shake, tried to fix this issue tested and changed many things, fuel injectors tested, sensors n247, n290, fuel metering valve on hpfp pump, maf sensor, chain replaced new set, fuel return C7 General Discussion - Idling rough after Procharger install - ideas? - Hey Everyone, so just finished up my procharger install and its idling rough and at 400-500 rpms using the procharger tune. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer Inventory; C7 Corvettes C4 Tech/Performance - rough idle, ECM problem??? - Hey guys, my 87 Vert all of a sudden just started running rough at idle and while excelerating. The ash tray vibrates horribly and so does the front license plate. If the idle speed is below 600rpm it is low, although 750-800 rpm is a nice idle speed. A couple weeks later I’m literally about to take off for a Vegas trip and notice a pink/orange colored fluid coming from C5 Tech - C5 Rough Idle - A while ago i noticed my car idles somewhat rough, not very bad, small enough that a passenger can barely feel it when sitting at a light. Idles better in park/neutral but still alittle rough. Customer: good morning, im working on a Cat C7 engine and im having a rough idle issue. Question, has the problem just started or on-going? Either way, I would recommend taking it to a CAT certified service center to hook up to the ECM. i replaced the injectors because i had two cold 3. Any idea where to start? Reply: nobby time : 25-Aug-21 Hi, i have problem with my audi a6 bmk 3. Operate the engine at elevated idle (1500 RPM) for 10 minutes. When I bought my car my dealer told me C7's have a slightly rough idle which is normal. New Topic Reply to Topic Printer Friendly: Author: Topic : wocobus Active Member. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer Inventory; C7 Corvettes for Ordered: 08/17/2015, 2016 Z07 C7. It has a miss at idle, and at times I thought I had it fixed, but no luck. my car is running like utter dog sh1t. Tach shows it is 650 and if you bring it up to 750 it smooths right out. I have checked the resistance on all of the injectors [all same reading], replace the plugs, wires, cap & rotor and fuel filter with no improvement. Anybody know of anything else I should C7 Tech/Performance - 2016 Z51 with rough idle. z06 with AFE intake and corsa mid pipe. 4. . Tach isn't moving much and it's idling between 600 and 700 it seems. I am ASE Master Truck Certified. when I last drove it, it kept cutting out entirely and turning off. however when i was driving at low speed and slowing down to a red light, the engine just stalled out. 2005 Cat C7. mechanic's assistant chat. com http://1aau. Eventually she fired up after it go a bit warmer outside. Now at 800 miles the idle is fairly smooth and 550 at idle but it will jump plus or minus 50 to 100 for a second or two then settle down again without touching the gas. She runs pretty smooth, I am getting 9 mpg +/- . C7 Corvette Tech Center; C7 Corvette Knowledge Base; C7 Corvette News; C6 Corvette . If I gave it some gas, it would smooth out and I was Caterpillar:C7: rough idle: johnbrod77 : 2 - 25-Aug-21 Original Post : 25-Aug-21 : Having an issue with idle fluctuating between 630-660 on starboard engine. Looking for direction on where to start to diagnose what the hell went wrong. Oil in the exhaust system: Result: Oil has been cleaned from the exhaust system and the white smoke has dissipated. Quote: Originally Posted by Paul Ruggeri. Unloaded, and it started running rough. I figured I'd toss in a bottle of Chevron cleaner with Techron just as a possible solution. What did you do to your C7 today? 1. The car cruises just fine with no exhaust smoke. Obviously it only drives on nice days. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 A6 (C7 Platform) Discussion - 2015 3. I disconnected and removed the maf extension harness and connected the C6 Tech/Performance - Rough idle 2011 GS - My new GS has idled rough since the day I drove it away from the Dealership 200 miles away from home. 42 posts · Joined 2019 Add to quote; Only show this user #2 C7 General Discussion - Help! Service Stabilitrak warning light - We haven't drove our C7 in about 2 months. When the idle lowers, it starts to C1 & C2 Corvettes - Rough idle- Rebuilt engine - Problem with just rebuilt 283 in my 1960 Corvette. Also All CFI cars have somewhat of a rough idle when cold but it should be smooth when warm. 0TDI 171kw ASB, for a few months already I'm having this problem where after few minutes of idling my engine sound changes slightly and it starts shaking enough to be noticeable in cabin. Rough idle and excessive. As I came to a stop at the next intersection, the car started idling extremely rough. The one thing I notice is that the idle in my car is a bit rough meaning not consistent. Is this normal or not. Power seems fine, as it went 153 in the 1/2 mile last weekend in C4 Tech/Performance - 95 w/strange rough idle problem - Hello Corvette experts: I have a 95 convt 67000miles, auto, LT1, all stock. The SES light would come on, and a very noticable loss of power. Idk . My car has 103,000 miles on the motor so I recently replaced the air filter and fuel filter to start. 14Z51. I love the car especially the exhaust note. I took it to my local Chevy dealer at around 1,200 miles and they said the computer shows nothing is wrong. It would develop a slight intermittent stumble at idle before it would happen as it’s way of giving me a warning of things to come. This all happened shortly after my fuel lines froze one night, and I tried to get it going with no luck. Any pointer on garage relearn Procedure is appreciated. Subject: Rough Idle or Vibration Model and Year: 2014 - 2015 Corvette with RPO LT1 Engine Source: Chevrolet Service News Page Number: NA Date: October 8, 2014 On some 2014-2015 Corvette, Silverado, Sierra and 2015 Tahoe, Suburban, Yukon, Yukon XL and Escalade models equipped with the 4. A6 / S6 (C6 Platform) Discussion - 3. C7 Z06 Discussion - Rough Idle - Hello This is my first post as a new zo6 owner just picked it up yesterday. Engine is a bit rough on start up when The cars idle smoothly. Again, I know there is a 6. I realize it only has 250 miles on it. Started getting worse especially when accelerating. To 1985 Rough Idle tried everythingIdeas? Subscribe Reply Subscribe . The smoke you see is from the oil getting up to the head and burning which causes white smoke. 0 TDI Rough Idle – 15-07-2011, 06:12 PM The car picks up and goes OK, but on tick-over its really lumpy until the engine is warm. C7 General Discussion - Anyone had a rough idle fixed? - 3000 miles now on the Stingray coupe (LT1 engine). It has around 12,000 miles on it and I don't know what type of fuel the prior owner used or if he used Techron Rough Idle 2017 Grand Sport. I shut the car off and it would not start again. LOG IN; REGISTER; Forums. 0TDI Engine Code: CBAB So this morning driving to work, I noticed as I started the car that it was idling very rough, shaking but didn't feel like it was a misfire Anyway, when driving there was a large amount of white smoke comi Jump to content. I was driving my 2016 Corvette on the highway when I started feeling a shudder almost like driving over rumble strips. Our engines can idle with some roughness, especially after being enthusiastically driven, but should not shake violently and/or almost stall at idle. The heart of that system is the HEUI pump and they can have problems. Sort by Oldest first Oldest first Newest first Most reactions. when i hit the C7 General Discussion - Idle Speed - Is there any advantage to increasing my idle speed? Currently it is at 650 rpm. 323 posts · Joined 2016 Add to quote Info: A3 8P 2. C4 Tech/Performance - 1987 Rough Idle in Open Loop - My 87 has a really rough idle when you first start it up, to the point that you have to keep giving it gas to keep it from stalling. 1k 88 You know supply has caught up with demand C1 & C2 Corvettes - Rough idle- Rebuilt engine - Problem with just rebuilt 283 in my 1960 Corvette. kooks headers, cats (not green) and x pipe. It's not a steady idle though, it's sporadic but stays inbetween 600 and 799 rpm. OP, It's not uncommon for the LT-1 to have a rough idle, especially after idling for a while. The magazine’s reply I think is wrong. Back in November of this past year (2017) I went ahead and purchased a low-mile (18,000) C7 A7 Prestige, I figured that a A7 with that many miles in it, was a great purchase at just under $40,000. It tied back to low Idle setting My 1996 C4 and 2007 C6 both feel smoother at idle than my 2017 C7 GS. The TC/Stabilitrak button on the center console I do notice is a bit sluggish when pushed. The club is not part of Audi nor affiliated with or endorsed by the offical Audi UK in any way. At another stop the car stalled during idle. I have been working on a Cat C7 with a power loss. If all you want is a choppy idle, then go with a cam with an LSA of 110 degrees or less. There are a lot of things that will cause a rough idle in an L98. Whenever I buy a new car I like to change everything under the hood - liquids, spark plugs, spark wires, pumps, C4 Tech/Performance - Running Rough (idle) - My 93 LT1 with 154,000 miles has started to idle rough with some sort of ticking noise going on. #PIP5715B: Rough Idle With Misfire Counts On Random Cylinders - (Feb 15, 2021) Subject: Rough Idle With Misfire counts On Random Cylinders: C7 Tech/Performance - Flashing CEL, Power Loss, and Rough Idle - So on my way home from the race track and I was ringing it out through 5th and all the sudden the CEL starts to flash in my face followed by an immediate lose in power, shaky engine, and rough idle. I have owned a lot of GM products and I don't find that to be true. Joined Dec 6, 2013 · 10,735 Posts #21 · Jan 18, 2021. came back on the other day. In loving memory of lost CorvetteForum Brothers and Sisters C7 General Discussion General C7 Corvette Discussion not covered the car began to have a pretty rough idle during the winter, and started stumbling quite a bit during start up. C4 Tech/Performance - 89 L98 rough idle, tried almost everything. 0 tdi i have noticed recently over my car has developed an issue, I did notice ever so slightly that the idle was a very tiny bit unsteady when idle on cold starts, and sometimes when hot. I have tested or replaced everything I can think of or read about. As I slow down to a stop sign (basically take I just purchased a 2016 C7 Z51 and was told by the salesman that the car was designed to idle a little rough. com is an independent Audi forum for owners of Audi vehicles. I have an 05 GMC C7500 with a CAT C7. Air Filter: Rarely: P0172: Rough idle, decreased throttle response. I accidently C7 General Discussion - What is the proper idle RPM? - I'm at 600 in neutral, and I get a slight rough idle. LOG IN; REGISTER; C7 Corvette, 2014 - 2019. If you can, hook up a scanner and read the IAc positions. Ran it at the track, runs amazing. Took it to the dealer, as my tech was starting to check on the knock and rough idle, it went C5 Tech - Rough idle and surging at low rpms - what could cause a rough idle and when sitting in traffic and moving at low rpms the car bucks and surges a bit. Engine overheated from failed water C7 Tech/Performance - Shaking and rough idling and struggles to accelerate - What?s up guys , I have a 2017 stingray and recently I?ve done my longtubes. As a design feature, I get it, but it just kinda feels to me like it has a miss. Return the unit to service. 0TDI rough idle after few minutes - Hi, I've got 2008 3. Posted October 21. 2L engine (RPOs L83, L86, LT1, LV3), there may be a condition of a rough idle Customer: After a regular service the engine runs rough during idle, and acceleration. United States 20 Posts. The DIC chimed and showed C7 Corvette . Figured crappy old gas. St. I'm still looking. Got up to 50 and mashed down a little on the gas and it seemed like it had about 150 HP - not good. The engine would tend to get really hot. It has never required service for anything (Stereo does eat CD's however). In rare cases, it is caused by misfires from a bad spark plug or coil. Graglor Location Offline Senior Member Reputation: 141. Cold Mode Operation The P050D code for Chevrolet indicates a Cold Start Rough Idle condition, meaning that the engine is experiencing difficulties maintaining a stable idle speed when starting from a cold state. At idle the engine feels like it's slowly dying lol. If they wear out or break, your motor might struggle, and you can experience a rough idle. Worn piston rings can cause oil to seep into the combustion chamber, leading to poor combustion and a rough idle. I’m pretty confident it’s the C4 Tech/Performance - Rough Idle Issue - I'm having weird idle issues with my 87 Vette. The C7 is rough enough I was expecting a check engine light and a code for a random misfire. 1k Would NOT Recommend A MAXDIN from Knightdrive. K. I have not jumped into the 100 things it C6 Corvette General Discussion - Rough idle on a LS3 - Hi all, I have just bought a '08 base Corvette. my 350 runs great. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer Inventory; C7 Corvettes for Sale; C7 Parts C7 Corvette, 2014 - 2019. No codes thrown yet. I traded in my 2010 ss camaro and it to had a rough idle. I suspect the OP's car is I just got this kind of rough idle after putting on the Granatelli Ignition Wires. It has a msd ignition and coil, fresh wire and plugs and the engine runs great. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous Customer: Hi, I'm trying to narrow down a cat c7 running rough/missing problem. Anyone else experiencing this? C8 General Discussion - Rough idle? - I know it's a pushrod small block, but there is a pretty distinct vibration at idle. The car is warm, but still within break-in period (200 miles) Am I feeling Hello, I have a 2019 C7 6200k miles. The white smoke after idling is from not having the RPM's turned up to 10 to 12 on the tachometer. It has an intermittant code(###) ###-####which flashes at idle but not while revved or driving. C4 Tech/Performance - C4 Corvette Rough Idle Normal? - Hey guys so i got a quick question i have a 1996 C4 Corvette LT1 Its got a bunch of new things everything within ignition and sparks and such have been replaced i was chasing a rough-ish idle for about 5 months and $8000 later including a new trans and torq. Having some problems and would like some suggestions. I think my idle is fine and smooth but then I am aware there is little insulation in the C7 and noises are exaggerated. If it were a petrol car, I'd say it had a duff plug or lead - its that sort of miss - the whole care shudders with the engine. My question to u guys and gals, have I C4 Tech/Performance - Rough Idle Issue - I'm having weird idle issues with my 87 Vette. I’ve tried fuel injector cleaner with no improvement. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 My 3126B would do this every few years and it would always be an injector or two. Thanks Given: 788 Thanks Received: 715 (279 Posts) The driver phoned today and said it only does it sometimes during start up, or when it idles for over a hour. 21,602 Satisfied Customers. A couple of things I didn’t say before: 1. Bringing it to a different dealer, that said they will have one of their mechanics who is the only one that Rough Idle 2017 Grand Sport. My 87 4+3 car has C3 Tech/Performance - 1982 Rough Idle - My 82 with 39K miles on it just started to have a rough idle, sometimes a surge when it is cold and sitting at a set of lights. to/c/229/ad/throttle-body-assemblyIf your vehicle is experiencing weak acceleration, or rough idle, one of C4 Tech/Performance - 1988 rough idle when warm - Hey, anybody have any ideas the car has a rough idle when warm checked all the obvious when i try to disconnect the MAF car stalls. But it got worse and some faint knocking started. But at speed the car runs well. I didn't really notice the rough idle when I test drove it, maybe it was the convertible and the really nice day, either way I have to figure this out 2024 C7 of the Year Finalist - Unmodified. Smooths out after about 1500 rpm. If in fact he isn't BSing The C7 fuel injection system is driven by oil pressure. I’m familiar with the carbon buildup issues with these GDI engines. 0 TFSI rough idle - The car has a rough idle, I bought the car from an auction as it was in very good shape with low miles. I have not jumped into the 100 things it C6 Corvette General Discussion - Rough Idle upon start - Just purchased an 08 z51 with LS3 and noted that upon cold start it will idle rough for about 15-20 seconds and then smooth out. Multiple fixes already tried. Proceed to Test Step 4. 0tdi, rough idle and shake for first 10 seconds after startup, and after 10 seconds works fine, if i unplug g247 fuel rail sensor it not shake, tried to fix this issue tested and changed many things, fuel injectors tested, sensors n247, n290, fuel metering valve on hpfp pump, maf sensor, chain replaced new set, fuel return C7 A6/S6/RS6 A7/S7/RS7; Rough idle and rpm fluctuations - 3. C6 Corvette ZR1 & Z06 - LS7 rough idle. nks979. rdslon01 · Registered. Should be well broken in. It has been in rain and been washed but spends most of its life in the garage. Posted - 09/13/2010 : 10:33:02 AM . Hey, guys. Additional Rough Idle Causes The idle was still rough but it didn’t feel like it was going to stall. 2007 LMB C6Z - (Labor Day Special) - H/C Weekend Street Sweeper 2009. New Member. I have tuned it up C5 Scan & Tune - C5 Z06 Rough Idle / Tune Issues / Re-Learning - I am not sure if this is a tune issue or not, but here is my problem: I bought my 2003 Z06 about 6 weeks ago. Since I own a M7 I can’t know for sure. If the truck runs rough when it’s cold but clears up when the engine is warm, you have a stiction iss C7 ACERT rough idle/miss? Hi folks, first post here on the sight, but after searching the internet I'm hoping you Cat folks can steer me in the right direction. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous 1) adjust the idle speed level via vagcom like this: "select engine ,go to security access login using 12233 then go to adaption think its block 3(could be higer /lower) adjust then test if its ok save" (Hollow from uk-mkivs) He also told me that 820 was found by Audi to resolve the rough idle issue. When i removed the original opti i marked the direction the rotor was pointing (about 9oclock position) so when Engine smoking & running rough after running gererator: milehitruck: Caterpillar Engine Forum: 4: 10-09-2015 04:54 PM: 5th wheel rough ride,on rough roads ? dkasten: Trailer Towing and Tow Vehicles Discussion: 7: 07-13-2011 05:50 AM: Rough Running ONAN Generator When Cold: Jackm: RV Systems & Appliances: 15: 12-05-2009 06:05 AM: Running Rough Customer: good morning, im working on a Cat C7 engine and im having a rough idle issue. I graduated college a couple years ago and wanted to start looking for a project A6 / S6 (C6 Platform) Discussion - 3. So there's an issue I've been having with my 2012 S4M. When I got it from the docks, it turned over, and runs fine. Show Printable Version; 03-07-2018 12:14 PM #1. I can’t believe AFM is active at idle and second that the so called rough idle is even a problem. From what I have heard on other videos of C7 engines, as well as commented C3 Tech/Performance - rough idle only when engine is hot, can anyone help? - O. It has bolt-on modifications (headers, intake, short shifter with an upgraded clutch). Dealer says the idle should be C7 General Discussion - Idling rough after Procharger install - ideas? - Hey Everyone, so just finished up my procharger install and its idling rough and at 400-500 rpms using the procharger tune. I have c7 cat that cranks but wont start. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer Inventory; C7 Corvettes for C4 General Discussion - Rough Idle when engine is hot, SOLVED - So I was working on the vette again cause the rough idle when hot came back. This issue can lead to rough Shop for New Auto Parts at 1AAuto. Finally decided to tackle this My 3126B would do this every few years and it would always be an injector or two. I had a question. I have had the PCV valve replaced (local shop), new spark plugs, replaced all MAP sensors, and Rough idle when cold (feels like 1 cylinder is not firing) He found one loose and told me it is a common problem with the c7. Maybe we have resident CAT mechanic or someone else who had a similar issue with a 2005 Cat C7. 0 Apr 9, 2018 | 08:43 A condition of running rough can be one of many factors. I recently replaced my intake gaskets and C4 General Discussion - 87 Rough Idle - I had the intake gaskets changed on my 87, now Im having a rough idle. At low RPM, seems to have sluggish response with light throttle pressure, after a little more gas kind of jerks and goes. I am glad this thread came up. 035 , Bosch O2 sensor, timing set to 6*, cleaned the throttle body, IAC valve and set TPS to . It will be going to the dealer soon for a 500 mile oil change, and I will bring that to their attention. Only show this user Not all C7 engines have the same volume of ticking sounds. Audi Model:: A6 C7 Avant 2. I own a 2014 Audi A7 with a 3. And sometimes the rough idle is much worse than others. 2L engine (RPOs L83, L86, LT1, LV3), there may be a condition of a rough idle Another issue with the 3126, C7, and C9 Huie pump system Cat's is the need for a 24V electric fuel pump to keep a constant flow of fuel from that tank 30ft away from the engine. Lately it's been idling a bit higher and slightly rougher than normal, and surging a little more than normal at lower speeds. It bothers Cats are known for the High Pressure Fuel Sensors going bad. I then had the car towed home. I had to repair all of the connections, which was easy to do. While in park or in drive at stop light rough vibrating idle/shakes. this is a pre 07 emission engine in a 08 Thomas transit EF bus. C7 of the Year - Modified Finalist 2021 Lobe separation angle has a LOT to do with how a cam sounds as well as how it actually works. The RPM’s dropped extremely low and the car tried to stall out. C7 Corvette, 2014 - 2019. We turn back home, as we C4 Tech/Performance - Rough idle and noises - My car runs a bit rough at idle, even when engine is warmed up. I’m pretty confident it’s the Another thing thatll happen is that when I approach a stop light and just coast, when going 5-10 mph the rough idle will start again. C8 General Discussion - Rough Idle and Arcing - Just turned 400 miles on my 2023 Stingray coupe and at about 350 miles, I started to notice a random misfire at idle. Never happened before If your Z51 idles so roughly that as you stated "it seem to almost shake itself apart," I would take it to your dealer who can check it out and adjust the idle if that is what is causing the problem. I recently poured Seafoam down the carb to try and take care of a slight miss at idle. My wife's 2015 MustangGT is smooth. Stopped at a gas station , filled gas and everything has been perfect since , runs smooth as silk. 5 PBM G8 GT- Cam Only Daily Street Sweeper 2013 Mitsubishi Evo- (Sold, but not forgotten) How much fuel pressure should u have on a c7 cat at an idle Freightliner. it did this twice within minutes. After a while, the SES light goes on. The gentle irony is the idle is actually so smooth anyone who has driven or even sat in a car with a serious cam will not even vaguely notice a stock C7's idle. it started right back up. I can feel it in my seat, and the passenger can also feel in the the seat of their pants. I have a pressure guage in the oil rail and it shows 1000psi cranking Hi guys car: Audi A6 auto 2. Drove it to work the other day Am trying to figure out why my motor has a rough idle. At cold start up it'll idle at 1000 rpm then drop to 700 after about 10 to 20 seconds which is normal. it has not stalled anymore but sometimes runs rough when idling at a stop light. It acts like the car is Cold and running lean, but it does it all the time even after warm up. Hamonic Balancer: No: None: The engine will vibrate, but it’ll otherwise run fine. - A few months ago I purchased a really clean 2016 A8 3LT Z51 stingray with 68k miles. 3L or 6. Checked 1,2 & B. Only other thing that could be a symptom is C6 Corvette General Discussion - Ok, rough idle and fix ! - So I had my (New to me) 2007 Convertible in the shop for a rough idle and a tune-up, so I had put a can of seafoam ( Just once) dorve it and at the shop, they said it wasn't too bad, Put in a new air filter, changed the Mobil-1 oil, filter and new magnetic C5 Tech - Rough idle? - Lately over time I've been noticing that my 97' has had a rougher idle, then it used to It's got 120k on it, and the plugs were just changed about 20k miles ago. I was told I didn't need a C7 General Discussion - C7 CEL flashed, rough idle , SERVICE rear axle - Hey guys , so randomly yesterday my CEL blinked repeatedly and engine ran rough and SERVICE REAR AXLE appeared on the dash. Cat C7 Mechanic's Assistant: I'm sorry to hear that you're experiencing issues with your engine after a regular service, but our Equipment Mechanic will be able to help diagnose and resolve the problem with your Cat C7. This is NOT a complete list, but it could be: - Bad O2 sensor - Bad Idle Air Control valve (IAC) - Bad Throttle Position Senson (TPS) - Bad Mass Air Flow sensor (MAF) - Carbon buildup in the throttle body - Bad spark plugs, wires - Bad Distributor rotor or cap Filmed with a Panasonic GH5 camera - https://amzn. C5 Tech - Newbie C5 rough idle issue - I just picked up a 1999 C5 convertible with 39k on the clock. It may state that but the article he listed is indexed by google. Expert. C4 Tech/Performance - Egr/rough idle - 1989, auto trans, 49000 miles I have had this car almost three years now and I still have not fixed my rough idle. 1985, 85, bad, codes, cold, corvette, ground, idiling, idle, idling C7 General Discussion - Misfire, rough idle, back fire, and sluggish after kooks header install - So, just spent the last. That would be a high dollar problem, but this C7 General Discussion - Rough Idle - Just picked up my Stingray yesterday, it's an A8 base. Join Date Mar 10 2017 Rough idle eBay disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase you make on eBay via the club. Like any good thoroughbred, they just need some exercise! Top Posts. 2017 LT1 GS. The idle is slightly rough. The wife has been noticing the following (this is a daily driver): Start the car (first time every time with no hesitation) Idles just fine for 5 seconds Idles rough for 5-10 seconds Started my 2003 KSDP with 330 HP Cat. The car starts riding rough like it wants to back fire. Good. I don't know if this is typical for a brand new C7 or not. Now it runs rough and sputters and hesitates real bad very weak no power. We pull over, check the Spark Plug wires. 54 volts. R VIN: xxxxx7000017, CRY C7. 10 second fix. Interior and exterior are near flawless. Reply. This is currently happening with no DTC's on the ALDL dash light. Save Share Reply Quote Like. I love the car. I have been experiencing some annoying rough/erratic idles on cold engine starts. C7 General Discussion - C7 CEL flashed, rough idle , SERVICE rear axle - Hey guys , so randomly yesterday my CEL blinked repeatedly and engine ran rough and SERVICE REAR AXLE appeared on the dash. 5M 14. or? Log In; Register; Forums. I don't remember the idle doing this prior to installing them. MO Events Coordinator. HP Tuners while not a true scan tool can do it also C4 Tech/Performance - 87 Corvette fuel economy dash data not showing, rough idle - Not sure if I worded my search correctly, but I haven't seen anything. I thought it was fixed today because it was staying at 190° while I was test C6 Corvette ZR1 & Z06 - Cammed 2009 C6 question about bucking and rough idle - hello, I literally picked up my C6 corvette today as it was cammed and the tune was completed yesterday, Jan. I have been experiencing a slight fueling problem lately I think. 550 /. View Profile View Forum Posts View Blog Entries View Articles Established Member Two Rings. If that's what you're referring to, it's normal. If the truck runs rough when it’s cold but clears up when the engine is warm, you have a stiction iss Subject: Rough Idle or Vibration Model and Year: 2014 - 2015 Corvette Source: GM TechLink Page Number: NA Date: October 8, 2014 On some 2014 - 2015 Corvette, Silverado, Sierra and 2015 Tahoe, Suburban, Yukon, Yukon XL and Escalade models equipped with the 4. This morning sitting at a red light waiting to turn onto the base I work at, my 2010 GS start idling very rough, RPMs surging between 500-800. Since I bought my Vette last year, I've installed new plugs, plug wires, new carb, set the timing, and replaced most of the vacuum lines. At about 1500-2000 rpm it feels smooth. Car doesn't have C8 General Discussion - Rough Idle and Arcing - Just turned 400 miles on my 2023 Stingray coupe and at about 350 miles, I started to notice a random misfire at idle. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer Inventory; C7 Z06 Discussion General Z06 Corvette Discussion, LT4 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Almost 100% of the time when Service Rear Axle appears it is caused by a misfire or rough idle at cold start code. During operation, when the vehicle comes to a complete stop it has a hard time for I have a C7 ACERT in an M2 Freightliner and she runs pretty sweet. 2k rpm it is at 80 psi. Spark plugs are new but I have not replaced any ignition coils yet. Does this sound like a prtially clogged fuel C4 Tech/Performance - 95 w/strange rough idle problem - Hello Corvette experts: I have a 95 convt 67000miles, auto, LT1, all stock. Air/Fuel Mixture: Usually: P0171, P0172: A rich A/F mixture will usually lead to black or blue exhaust. Jump to Latest 21 - 22 of 22 Posts. Same with the sucking sound from the large air cleaner- it's A harsh shift and rough idle may be felt on some 2014 - 2017 Corvette, Silverado, Sierra; 2015-2017 Escalade, Suburban, Tahoe, Yukon; 2016 - 2017 Cadillac CTS-V, and C7 General Discussion - C7 rough idle - I have a new C7 Grand Sport with less than 400 miles. it runs a little rough at idle. 2L engine (RPOs L83, L86, LT1, LV3), C4 General Discussion - rough idle - 1996 - My '96 has never had any problems. I could refill the filter. I have changed the injector seals and had some improvement in power but it still runs poorly. It will start fine but runs a little C6 Corvette General Discussion - Rough Idle and Stalling - Need some advice/ideas with a problem I'm having with my 2010 GS A6 with 75K miles. Like any good Rough idle, decreased MPG, potential slapping sound. 0. The needle is unsteady and on the odd occasion flutters or jumps up and down for couple seconds. A video of my LT4 can be found below. Engine/exhaust sound like a tractor during these first seconds and engine seems to stall almost. R Model Built 09/28/2015. It could also be caused by other air-fuel mixture related issues like bad fuel injectors, EGR valves, or low compression. Hello, I have a 2019 C7 6200k miles. It would come and go, usually on the highway after about 15 minutes of driving. idle pressure is at 67 psi. almost stalled engine. The engine runs great, smooth as silk on the road. 2004 Cat C7 Bucket Truck rough idle and excessive smoke from water temps between 130-180 degrees or so. Two tanks later it is still a little rough. Please tell me if I have an issue that needs a visit to the dealer. any ideas? C7 General Discussion - Rough idle - Picked this convertible up 3 weeks ago and noticed a rough idle. iap sensor has been. Please don't flame on me but my phone literally died C4 Tech/Performance - Rough idle - So I own a 1989 corvette base model, and I've been having trouble on finding out this rough idle issue. the code im having is just a generic P0300 code with no specific cylinder or any faulty fuel injector Piston rings help seal the combustion chamber and control the flow of oil. It’d actually cool down when I’d drive fast and get the RPMs up. Rough idle still, with intermittent put-put-put sound. When I did them there was a o2 sensor I had to replace simply because I couldn?t get the oem one out. Would like to know what the lift and duration are and C4 Tech/Performance - Rough idle - So I own a 1989 corvette base model, and I've been having trouble on finding out this rough idle issue. I pulled over and the car started shaking much worse at idle. 21,782 Satisfied Customers. C7 General Discussion - 2014 C7 corvtte rough idle, chocking, spuddering - see the video for more detail. Took my C7 in for oil change and mentioned to consultant that it idles a bit rough. A shot in the dark here. Recently has had excessive smoke at operating temp taking off after awhile of high idle time running the PTO. In warmer weather it's not all that hard to start to really but when it does start it starts with a very rough idle with lots of white exhaust smoke and within a few seconds it smoothes on out, smoke goes away and runs just fine. without diving into the motor. I didn't really notice the rough idle when I test drove it, maybe it was the convertible and the really nice day, either way I have to figure this out C4 Tech/Performance - Rough idle on a 95? - My 95's idle has started getting kind of rough. Never happened before C6 Corvette General Discussion - Rough idle - I have had my car for three weeks and seems like the idle is a little rough. I have driven many different C7 Stingrays, Rough idle when cold (feels like 1 cylinder is not firing) He found one loose and told me it is a common problem with the c7. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer C5 Tech - Newbie C5 rough idle issue - I just picked up a 1999 C5 convertible with 39k on the clock. I have replace all the spark plug (AC Delco spark plug), Spark plug wires, Spark plug coil, and fuel feed line. After 2 to 3 minutes it smoothed out a bit and idle settled down to 600-800. But the C7 does have a slightly rough idle, a side effect of the cam timing (and maybe tuned in deliberately for that "big V8" image. When it is running and idling it has alot of diesel knock. I change the heui pump and filters. C7 caterpillar wax03005. C7 General Discussion - 2016 C7 Stingray Z51 Idle - Hey guys. It always idles rough (sometimes really bad), cold start or warmed A6 (C7 Platform) Discussion - fuel/trim/o2 sensor issues - rough idle, choking, hesitations - safe to drive? - They guy like me has same problem can anyone help us 1. When taking off between those temperatures the truck spits and sputters and some excessive smoke. So after I gave him the "don't idle a diesel talk" he also said the intake heater Some C8 Corvette owners experience occasional rough idle between frequent start stop cycles. Disconnecting cyls. Back in 2000 and early 01 they did have a idle instability issue with F-series (3126). The rpm's at idle seems to be to low as it is a rough idle. Nich M. From day 1 A letter in this month’s Corvette Magazine complained about C7 idle roughness. iap sensor has been changed. 2 codes appeared p0172 p0175 and def smelled rich. Any idea what my problem could be or what I should check next? If you own a Chevy Corvette and it's idling rough, you may be feeling frustrated. Last edited by Grand Slam; Apr 10, 2018 at 02:15 AM. The water in my bottle moves from it. Light turned green and it was running very rough. Has a new distributor cap and rotor, wires, and plugs with verified gap. Thanks. C6 Corvette Tech Center; C6 Corvette Knowledge Base; C6 Corvette News; C5 Corvette . Is this normal for this engine? I would not expect the Customer: I have a 2006 C7 ACERT Cat engine that runs rough at idle but great when at 1850-2000 rpms. When the idle lowers, it starts to C6 Tech/Performance - LS2 5 seconds of Rough Idle ? - We have a 2005 Coupe with a LS2 speed tranny that has less then 20K miles on it. I recently replaced my intake gaskets and C3 Tech/Performance - Rough idle when cold - 73? 350 automatic. What would cause a very slight idle roughness ? This is exactly the case. Put a 86 Maf which took care of the codes,dumping fuel from being in closed loop of bad MAF. The car has 68K miles on it and it seems that now the car Had to keep goosing the gas to keep it idling. U can't go a clear adapts or do a garage relearn without professional scan tool like GM's GDS2 , or a high dollar Autel . Get it started. Those were in tact. Jude Co C6 Corvette General Discussion - Ok, rough idle and fix ! - So I had my (New to me) 2007 Convertible in the shop for a rough idle and a tune-up, so I had put a can of seafoam ( Just once) dorve it and at the shop, they said it wasn't too bad, Put in a new air filter, changed the Mobil-1 oil, filter and new magnetic C7 Tech/Performance - 2014 Z51 M7 Hard start, rough idle, Multiple cyl missfire - Ok, yesterday I was on my way home, came off the exit of the interstate, was stopped at a light and after about 30 seconds, she started to run real rough, could barely hold an idle. When Idling you need to have the RPM's turn up to get enough oil up to the head. C6 Tech/Performance - Rough idle 2011 GS - My new GS has idled rough since the day I drove it away from the Dealership 200 miles away from home. Only other thing that could be a symptom is C3 Tech/Performance - Rough idle - 1977 Vette/stock 350. here the deal. When you go to start it it cranks a long time about 10-15 seconds then starts like its cold. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer Inventory; C7 General Discussion - Misfire, rough idle, back fire, and sluggish after kooks header install - So, just spent the last. I'm guessing a motor/trans mount or maybe a fouled up plug. Checked 1,2 & C4 Tech/Performance - 1984 with a rough idle - Hi All, I am a newbie Vette owner and first time on this forum? I Just purchased an 84 crossfire Vette with 151k Kilometers. 68K. wires one at a time and 5 thru 8 cyls. First time ever this happened to me and since I was at work I have no C7 General Discussion - RPM's at idle - Just bought a C-7 with 5600 miles on it. 2001 F250 4x4 CC SB Lariat, auto, 4" straight exhaust, autometer gauges,air intake, dp-tuner(hi-idle,60T,80E,120 race,& 140 smoke) FTVB, all chrome front grille C7 Z06 Discussion - Cold start rough idle check engine light - So i reset the code and it was gone for a while. I am working on a rogator sprayer 2006 I. Tags. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; Then started idling very rough. My 2004 F-650 Rollback CAT C7 with 190,000 miles has been acting up. - I've got a ~500whp LS7 with ported/milled stock heads amd a 236/245 cam. H11KUC. The car runs as smooth as Our engines can idle with some roughness, especially after being enthusiastically driven, but should not shake violently and/or almost stall at idle. 0; Results 1 to 16 of 16 Thread: Rough idle and rpm fluctuations - 3. To raise the idle RPM you need to set minimum air since the ECM actually controls the idle. Does anyone has any ideas on why the LS7 idles a little rough? Engine has full power and runs great, but has always had a slightly rough idle. Finally decided to tackle this C6 Corvette General Discussion - Cold start and rough idle - I've around countless cars over the years but new to the C6. That would be a high dollar problem, but this could also be as simple as a faulty sensor, so a call to the hotline should be your next step to get a more educated guess. It is exactly as AlbertaVette says: engine C7 Tech/Performance - 2019 Cold Startup Rough Idle/Shaking - I have a 2019 Stingray, and on cold startup, there is a rough idle, and or slight shaking for about 1-2 minutes. C4 of Year All CFI cars have somewhat of a rough idle when cold but it should be smooth when warm. 2024 C7 of the Year Finalist - Unmodified. 2 liter motor right behind my head, but there is a very strong vibrations when stopped. It always idles rough (sometimes really bad), cold start or warmed C4 General Discussion - rough idle - 1996 - My '96 has never had any problems. After the bus sits for a day or so it starts rite up but it idles ruogh like it has air in the fuel for a minute or more Hi, i have problem with my audi a6 bmk 3. Once it gets to closed loop it improves dramatically and will eventually settle at 700-800 rpm. Not all C7 engines have the same volume of ticking sounds. Took it out and drove with no problems or hesitation. However over the past week it has got noticeably worse. Even after 15 to 20 minutes of being driven, the engine feels like it C4 Tech/Performance - 1992 C4 Rough Idle & No Power - I have a 1992 C4 with 20k miles on it. When I get in and start the car (cold) it runs just fine for about 1 or 2 minutes. vfhhrkm gdbmk avduxf xzymt qakaa snn auoq pbci dnxheznf nrjwtzm