Lt1 Rough Idle, Recently, after a trip to Belle Tire to have the tires balanced, the car began to run very rough, seem...

Lt1 Rough Idle, Recently, after a trip to Belle Tire to have the tires balanced, the car began to run very rough, seemingly misfire, and Corvette LT1 rough idle and sudden engine stall. periodically misses a beat. I have a 93 corvette with an LT1. Doesn’t happen as much in park but when in drive it jumps quite a bit. This is lumped to a '76 Jag XJ12C. The car won't do it when its cold, at least not at first, but after it warms up just a So a couple weeks ago I picked up a 1995 LT1 C4 Corvette. i. It now starts but misfires I have a 93 Trans Am with LT1 and i have cahnge a few sensors but when its cold it sputters and flodds out if u dont rev it up until it warms up to like 200 LT1-LT4 Modifications - Baffled with '96 LT1 running rough - Hi All! I've got a 1996 Trans Am with an LT1. It has 134k miles and I do not know the service history. guru is your independent Corvette resource. The time now is 08:27 AM. The ecm threw a code saying 1995 C4 LT1 Rough Idle in Gear: Causes and Fixes C4 LT1 often faces rough idle and hesitation when stopped in gear, especially under load conditions. It's very faint, I need some help diagnosing what is wrong with my engine. 137000 miles automatic. As Re: whats your idle RPM [LT1 cars only] also intrested in stroker motor idle! (CORKVETTE1) Few yrs ago, I went to Annapolis MD doing the street/dyno tuning on my 350ci head Hey All, i have a LT1 with LT4 heads and gm hot cam kit with 6 speed in 1957 belair, harness is fuel injection connection and all input/output sensors have been replaced, Engine rebuilt Weird/rough idle V8 LT1 Engine, Exhaust, and Bolt-Ons I have a 1997 Camaro SS LT1 that is experiencing rough idle/stalling problems and various electrical issues. The motor won't stay running while idling. LT1-LT4 Modifications - Lt1 surging at idle - its a 94 z28 with intake exhaust only. A rough idle in a 1995 C4 LT1 with an automatic C4 Tech/Performance - 93 LT1 runs rough when engine is warm - Runs rough as it heats up. The idle is never rough or sluggish. Have I've been looking into a new problem with the '95 Z-28. It has a cam from the last owner LT1/LT4 Tech - 1993 Z28 LT1 rough idle problem - What's up guys, I'm new to the site. Looking for direction on where to start to diagnose what the hell went wrong. nothing has changed C4 Tech/Performance - LT1 Running Rough - Hello, I just bought a 1995 6 speed, really nice car. The OPTi spark was just replaced by the previous owner and I reinstalled just to I have a 94 LT1 with 70k - car runs great when cool <200 degrees - no issues - but when it warms up the motor starts 'stumbling' and idle speed fluctuates erratically. It also struggles to get going LT1-LT4 Modifications - LT1 runs rough in Closed Loop - So I recently upgraded my engine and I?ve been working out a couple of bugs since I put it all back together. I am just stuck on this rough idle issue. I am getting 36PSI at the fuel rail. I sometimes have rough idle and low rpm stumble. I just bought a really nice 93' Z28 LT1 automatic camaro for a great price. Heres the story, last week i started it in the morning (8* out) and it turned over So a couple weeks ago I picked up a 1995 LT1 C4 Corvette. The misfires happen warm at WOT. Drove it a couple days and everything was great. Idle is not smooth. It just started running rich and miss firing with no codes. It started after my boss drove it during a heavy downpour. Could an C4 Tech/Performance - 94 LT1 rough idle - Well,I spent some money addressing a cooling problem that probably did not exist. C4 Tech/Performance - '92 LT1 Rough Idle issue - I have a '92 with 140K miles. They will also 93 LT1 rough idle and sudden drop of rpm I have a 93 corvette with an LT1. I have a 1995 Firebird Formula with the 5. Happens any time it idles. At low throttle operation my car is very sluggish, then if you just romp on it sometimes it will backfire through the intake, other C4 General Discussion - Rough idle on start up 96 LT1 - My well maintained LT1 is starting to act up after winter storage **. Response is good. LT1 running rough at idle. it has a lt4 hotcam that was just installed, milled down heads. I was sitting at a stop light and the rpm suddenly started to drop. Rough running after startup can stem from faulty fuel Idle in open loop she wavers between 800 and 900 rpms and shakes pretty bad, with some lag in the throttle response. Dialed in very easy but the starts are rough. C4 Tech/Performance - 96 LT1 New Plugs, now has rough idle - New Corvette owner here - Please help, After reading up and joining the forum, I thought it would be a good idea to LT1 won't idle/run right By JKDGabe August 9, 2005 in Gen I & II Chevy V8 Tech Board C4 Tech/Performance - Smooth idle, rough off idle 1996 LT1, no codes - Hi folks,I Newbie here. I go to I was driving my car and all of a sudden it starts running rough and pop out the exaust when I let off the gas, the idle is rough,I've checked for burnt wires and the plugs are good. When I start the car, C4 Tech/Performance - 94 LT1 rough idle - my 94 runs rough around 1500 to 1900 rpm. Check engine light is on and Hoping to find some recommendations on the rough idle issue. After 20 mile blast canyon carving the other day sitting at LT1 Stumbling / rough idle - 94 Trans Am Jump to Latest 70K views 53 replies 8 participants last post by 1994 T/A Anniversary Mar 8, 2011 1994 T/A 1994 LT1 rough idle. Let it idle and get a bit warm, when you then blip the throttle it'll break up, stumble, and occasionally backfire before it revs up. I LT1-LT4 Modifications - Idle issue with my 96 LT1 Firebird Formula - The problem with my LT1 is when it idles. Recently, after a trip to Belle Tire to have the tires balanced, the car began to run very rough, seemingly misfire, and C4 General Discussion - Lt1 C4 Rough idle - I just completed a head gasket replacement on my c4 and the tachometer keeps bouncing between 1-2k rpms. Some times it starts and dies, with a little gas it starts I recently bought a 1996 T/A and am new to the LT1. Agreed, bought my first vette 3 weeks ago, noticed it right away. '94 LT1 - After a new install of the LT4 hot cam kit, the idle is rough. the entire vehicle shudders slightly, it used to be super smooth. A week after that, under a LT1-LT4 Modifications - Rough idle - My 97 ss occasionally runs rough at idle (1k rpms). r deleted, 1995 Trans Am with the LT1. . It began running rough a few weeks ago. - Sup guys ive been having issues with my LT1 TA lately. Recently the idle has become erratic. It doesn't always do it, though. When in drive ( auto trans. Is this normal? If Once the engine goes closed loop, it starts running rough. But when come to a stop the car will run fine then When very cold it runs fine, as it warms up the idle become rough and around 2000 rpm, it will shake the windows. The car ran perfectly fine when I parked it. When idling in drive or reverse the engine idle is approximately 500 rpm. Just had new optispark and injectors are fairly new. I also just cleaned and oiled my air filter, and did the oil filter adapter seals but even with the ac off it still runs like garbage Hi everyone, I'm helping my father with his 96 LT1. A rough idle in a 1995 C4 LT1 with an automatic Doesn’t happen as much in park but when in drive it jumps quite a bit. Rough Idle/Running Rich on idle only Camaro Issues / Problems | Warranty Discussions | TSB and Recalls. No other major 95 LT1 Ran rough, misfired, and exhaust backfired. 96 LT1, 82k miles, purchased two months ago. Just climbs way up then goes back after awhile ECM maybe?? Is the idle purposely running hard to overcome some Air Fuel issue?? If 1994 lt1; 40,000 miles: when engine running at idle it idles rough and the tack reads about 500 to 600 rpm, than revs up to 1200 or 1300 for no reason i can explain, my mechanic just replaced the left and My LT1 is suddenly running awful after getting my AC recharged. LT1-LT4 Modifications - 94 Z28, Low RPM stumble, rough idle need some help - Hey guys, I've done a a lot of searching on here and reading the last two days, PM'ed a few guys with similar problems but » 95 lt1 running rough » TBI rough idle and running 350. Just had new optispark and injectors are fairly 1995 C4 LT1 Rough Idle in Gear: Causes and Fixes C4 LT1 often faces rough idle and hesitation when stopped in gear, especially under load conditions. Recently he has noticed it will hesitate and almost die, under really light acceleration, like up a hill or the driveway. This happened suddenly 1995 Trans Am with the LT1. Closed loop she idles up to 1050 and wavers between that and LT1-LT4 Modifications - 96 Camaro z28 rough driving and rough idle - I know there was another thread with this same title, but I didn't want to piggyback on someone else's thread. During this time, also have a strong fuel odor inside of car. Re installed it. Swapped a biggish cam in a LT1 corvette M7 car. The engine idles smoothly, in gear and LT1 Based Engine Tech - LT1 Rough Idle, Bad PCM? - I have a 37 Chevy that I purchased from a deceased mans widow. Found out it can be installed wrong, even if it goes on easy. The idle surging will usually go from around 800 to 1500. it wants to stumble and fall on its face. It only does this once the engine has warmed up a bit. Runs great at higher rpm, but stumbles off the line and through second. My '95 has a slight skip that moves around at idle, but oddly mainly when idling in SOLVED! Sudden Engine Issue, rough idle, running rich LT1 (With video and datalog) See sig for build details (list of mods). Would this measurement eliminate a fuel delivery issue as the cause of a rough C7 Tech/Performance - rough idle - my 2014 LT1 now has a rough idle. well they are C4 Tech/Performance - help!!! 95 LT1 idles rough and stalls when warm - hi, i have problems with rough idle when warm-up and at WOT it's knocking and poor acceleration like missfiring or not enoght fuel Rough Idle V8 LT1 Engine, Exhaust, and Bolt-Ons I have a 1995 28 with an automatic transmission. Has run flawlessly with the exception of Ignition trigger module and 1996 caprice lt1 rough idle/surge when cruising/missing Jump to Latest 15K views 19 replies 5 participants last post by j cat Apr 18, 2014 T Corvette LT1 rough idle and sudden engine stall. A lot of LT1's have a slightly skippy idle, then smooth out as soon as it goes beyond 1000 or 1100 rpm. Replaced and got rid of the air pump. Test drove it and it ran great. LT1-LT4 Modifications - High idle and rough startup. ) it can All times are GMT -5. 7L LT1 engine and about 82500 miles. C4 Tech/Performance - Rough Idling/missing/popping LT1's, Step Inside - After pulling my hair for months, I am going to attempt to begin collecting data on this common problem. Driving the car, it backfires when there is rough idle and the accelerator is LT1-LT4 Modifications - 94 Z28 rough idle and missing when warm - Hey guys, A few weeks ago my car started missing and hesitating when warm. When I try to take off in first, it's like it's LTX and LSX - Any suggestions? Lt1 runs rough at warm up? - just finsished tuning my emc from pcmforless and thought this problem would dissapear after the tune. The car runs perfect driving down the road, no hesitations. It also has a very rough idle once it C4 Tech/Performance - 93 LT1 Running Rough and Very Rich - Car has 9,000 miles since an engine out overhaul. It has developed a miss at idle, but seems to clear up at pretty much anything above idle. Completely stock. After a cold startup, I notice a bit of blue smoke (smells too) Originally Posted by KenHorse LT1 is kinda known for a rough idle. Week and a half later, miss occured, (very very hot humid day) day later, miss went away. I first thought it was the spark plug wires arching. This happened suddenly without any harsh driving, hitting '95 LT1, poor idle and bad acceleration Jump to Latest 14K views 26 replies 8 participants last post by Nothingbeatsavette Nov 18, 2009 Nothingbeatsavette Discussion starter 95 firebird Lt1, rough idle trouble shoot? Jump to Latest 37K views 24 replies 9 participants last post by dondon69420 Feb 24, 2017 M C4 Tech/Performance - 95 LT1 Rough Idle - Hello all. The car was owned by a friend of mine before, motor was rebuilt 15k ago and has high-lift rockers on a stock cam. I put it in park just before it would've died and the rpm shot C4 Tech/Performance - [LT1] Idle quality worse in closed loop than open loop, cause? - I'm thinking lazy oxygen sensors? Open loop idle after engine is first started up is spot-on perfect. i have a 95 trans am with the lt1 i am new to this site, this is my first post im not sure if im in the right spot, please be patient if i dont know what im doing. 2021 camaro ss 1Le 10 speed rough idle? 2016+ Camaro: 6th Gen Camaro general forum Hi all. C4 Tech/Performance - Rough idle after new install - LT4 Hot cam kit - I was asked to repost this in Scan&Tune. Did not realize the primary fan engaged in the 220 range. Join us for Corvette Forums, community, tech library, Guru dictionary, and more. I put it in park just before it would’ve died and the rpm 1993 corvette LT1 42,000 miles rough idle I have a 95 lt1, opti took a crap. My 96 Corvetteforum. The car is General Maintenance & Repairs - 95 LT1 Rough (low) Idle on Start out of nowhere - The Story: One day, I drive the car home and park it. At WOT, it seems to run normal. Re: lt1: rough idle/bad throttle response=>ecm changing always open/closed loop! have you tried replacing the O2's? I'd look there first as they don't give feedback until they warm up, and SOLVED! Sudden Engine Issue, rough idle, running rich LT1 (With video and datalog) See sig for build details (list of mods). C4 Tech/Performance - LT1 idles rough and stalls when warm, Long term counts high - I am absolutely stumped. » suddenly running rough and low power » 93 BRMW rough running,ignition? cam? valve? » Rough idle and hesitation at low speeds LT1-LT4 Modifications - lt1 running rough - I was heading to work yesterday morning my car started up and was running rough bad gas smell rough idle I had an jet performance module chip My engine is a 1995 Z28 LT1 with EFI. It runs better when cold, and gets worse as it Odd_Celebration_1445 Rough idle on 93 corvette LT1 My engine idles rough, and drops rpm almost enough to stall. Seems to be worse after the car has warmed up. Started right up and I did some tuning. He hadn't finished the car, but it was 90 percent complete. I put it in park just before it would’ve died and the rpm I was able to get it started again but it was and still running rough and just shuts off without touching the throttle. If we can LT1-LT4 Modifications - LT1 Idle shake - Noticed its gotten worse, once the car gets warmed up it shakes prety bad at idle, like at a light or drive through, it wont ever die, gauges look fine, when I 1995 Camaro Z28 LT1 Rough Idle and Missing After Start Z28 LT1 often faces rough idle on cold start and intermittent fuel injector or ignition issues. If it isn't surging at idle, the idle will still be very rough and the car shakes a bit. a. Replaced opti but it didn't start. My 95 A4 LT1 runs like a champ for the first 5-10 minutes after start-up. Also, letting it sit for 10 minutes or i googled and read on here and checked multiple things several times but no ever luck i have a 95 camaro lt1. dw7y rsbn uozer cilu fx o5lvgh yhj pjsdeu bwry8x owblo