1985 Corvette Surging Idle

1985 Corvette Surging Idle, Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. C4 Tech/Performance - Surging Idle, Code 33, and Stalling with throttle. 1985 - So I bought a nice looking C4 for a decent price a few months ago. The following day, the car started surging (jumping up and down from 400-900 rpm) at idle after it reached operating temperature. sometimes it will die after a bit but not always.

C4 Tech/Performance - "91 Rough idle, surging PROBLEM SOLVED - I posted this initial on the General site by mistake. Just wanted to confirm that my problem consisted of a rough idle,. C4 Tech/Performance - (1985) Erratic Idle, excess delay when accelerating, and rough running at low speed - I currently have a 1985 corvette, and it has a very rough idle. I have a relatively stock (stock L98 engine with automatic transmission) 1985 Corvette. I've noticed for a while that it has issues idling after it enters Closed Loop. It runs decently above 35mph, but at idle.

C4 Tech/Performance - Bizarre idle surge problem - I've been battling a surge problem in my 85 for a while. If it idles for about 45 seconds or more, it gets a wicked surge that goes to about. I have an 87 auto corvette and I really need help chasing down a strange idle issue. As a preface, my idle speed used to be a steady 900 in P and 600 in D. Recently, I replaced my battery. C4 Tech/Performance - 1987 Corvette Surging Idle, No Response to Throttle, and Idling High in Park. - Hey everyone! Just opened up an account here after years of just reading through the threads. So let.

C4 Tech/Performance - 1985 With Erratic Idle - I am hoping for some suggestions from the group. I have a 1985 Vette with an extremely erratic idle. I have had 3 different mechanics look at it. Hello all. New to the forums here but have been following threads for a few weeks so I thought I'd give it a try. I have an 86 C4 with an idle and stall issue I just can't figure out. I've changed. C5 Scan & Tune - Why is my idle surging? - I recently had my car tuned with LS1 edit, and we got everything pretty well worked out, but for some reason the idle surges.

C4 Tech/Performance - Engine surging at steady speed- L98 - 1988 c4 with L98.At steady speed between 30 to 70 constant surge.Checked fuel pump:43 psi key on,38 psi engine running.Pulled vac. Nous voudrions effectuer une description ici mais le site que vous consultez ne nous en laisse pas la possibilité. C4 Tech/Performance - Surging Idle and stall problems - This is what I've been getting ever since the ZZ4 was installed three months ago in my 90 coupe. It wasn't that bad at first but now.

C4 Tech/Performance - 86-383 TB surging and idle speed problems - Problem 1. Surging problems on cold start on 1986 with a 383 engine, 58mm TB,. 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. Also not sure if it is connected but also. My buddy has a 1984 and trouble with low rpm running / (O2 Sensor?), he'll be going along about 35 mph @ 1200 rpm and for no reason he can figure it will surge up to about 1400 rpm them.

C4 Tech/Performance - At idle; Engine stumbles and surges after warmup! - Hey all. I'm new to this forum, although I've checked out the posts now and then to trouble shoot my problem. Solve common idle problems like stalling and surging in your C4 Corvette by understanding the Idle Control Valve. C4 Tech/Performance - Surging idle problem on my 89. Desperate!! - My 89 is giving me fits. I recently made it into a 383 and even more recently installed the FIRST Injection systems.

C4 Tech/Performance - surging idle - Ok guys, I have been working on this problem since I bought this car. When I bought this car it had been sitting for about 2 years. The car has roughly. I've noticed for a while that it has issues idling after it enters Closed Loop. It runs decently above 35mph, but at idle (after it warms up) it seems to idle around 460-700, moving in between those erratically. Sounds like an idle air control valve issue. You need to remove and thoroughly clean the throttle body. When it is cleaned up (use carb or TB cleaner & a brush) make sure that you oil the butterfly shafts.

C4 Tech/Performance - rough idle - Need some help diagnosing the problem. I have a stock 1985 auto that has a surging idle. Fuel pressure when vaccum is disconnected and plugged is. C4 General Discussion - Surging Idle, Check Gauges, Vaccum Leaks - I just bought a 1991 Corvette and it has a terrible surging problem. I believe it is. A rough idle or fluctuating RPM in a warm 1985 Corvette can stem from vacuum leaks, faulty idle air control valve, or worn spark plugs. Inspect vacuum hoses for cracks or disconnections.

My 1986 had a severe problem of erratic idle and surging. After chasing down a few vacuum leaks which did not fix the problem. My mechanic changed my ECM and the problems went. C3 Tech/Performance - Odd pulsing, surging idle on my '82 - So my normally rock solid 82 gave me a small worry today. I drove it around town for some errands and had no issues on a 90. 1985 Corvette Surging and Radio Fuse Issues Explained Corvette often faces idle surging and intermittent radio power problems due to fuse or wiring faults. Surging and stalling in a 1985 Corvette.

C4 Tech/Performance - 1985 Vette idle/open loop - I purchased this 1985 Corvette 3 wks ago. It was stored 25 years, well maintained and looks like new and has 60K on it. The idle fluctuates. C4 Tech/Performance - 87 Surging idle when cold - My 87 has an idle surge problem when cold. After start-up and the idle drops from about 1200 down to around 700, it will begin to. C4 Tech/Performance - 1985 Corvette Won't Idle - Hello! I recently got a 1985 C4 and I've been having quite the problem trying to get this to idle. Since it had been sitting for a while (years) I.

C4 Tech/Performance - 85 surging idle when at a stop - driving around enjoying the weather, came to a stop and idle was surging form 6100-4800, gave it a little gas and smoothed right. C4 General Discussion - idle problem 1985 corvette - Hi guys, I am brand new to this site and new to owning a corvette but I am having a problem with my 1985 corvetteproblem I bought. C4 Tech/Performance - 1985 C4 surging idle and delayed power - I'm trying to diagnose yet another surging idle problem with my car. I'll give a condensed history here: I've eliminated the.

They always are between 165 & 170 in normal driving and at idle. If I get on it, they go up slightly but come back down in a few seconds of slow down. CorvetteForum - Chevrolet Corvette Forum Discussion C4 Corvettes, 1984 - 1996 C4 Tech/Performance Surging Idle C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info,. C4 Tech/Performance - First post / 1985 surging idle - Hello everyone, first let me say Thank you, some of you have helped me a lot over the last few months getting this 1985 barn find.

C4 Tech/Performance - C4 high and surging idle - I?ve got a 1990. No engine light, no codes. It?s got a high idle which usually sits at about 1600 rpm, sometimes at 2000 though. Sometimes it will surge a. C4 Tech/Performance - Erratic/Surging idle - My 88 has recently began suffering from a surging idle, most prominent when cold. Car has thrown no codes whatsoever. I am fairly certain that. The car is still surging and has a check engine light on. I just pulled the codes and got: 22 Throttle Position Sensor (TPS) (Low) 33 Mass Air Flow Sensor Circuit (1985-1990) 43 Knock Sensor.

C4 Tech/Performance - 85 surges at idle when in drive - hi everyone! i have been having great luck with my car since all the advise i have previously received to get my car on the road again. If you own a Chevy Corvette and it’s idling rough, you may be feeling frustrated. In this article, we’ll look at some of the most common causes of a. C4 General Discussion - 85 surging idle - out of nowhere sitting at a light an my idle started surging from 6100 to 48 and everything in between, i was gonna look for a vacum leak but.

C4 Tech/Performance - 1985 c4 idle surge - Hello ive just got my car back from the garage ( been in since June with intermittent running issues ) they are resolved. C4 General Discussion - C4 1986 corvette surging - please help - We are from New Zealand and bought an 86 Greenwood corvette convertible in New Jersey and drove it down to Georgia then across to. C4 Tech/Performance - Surging idle - I have an 87 coupe that has a wandering idle. It wants to vary between 1100 and drops to 7 or lower, then back up again. Also sometimes stalls when.

Since 1975 the National Corvette Owners Association (NCOA) has grown to be the largest Corvette club in the Nation. C4 Tech/Performance - Idle Problems 85 Corvette - OK GuysI'm stumped now. Just replaced the EGR Temp Sensor, EGR gasket,Intake Air sensor, MAF Sensor, New Plenum gaskets,. C4 Tech/Performance - Idle Surging 89 TPI - Usually hang out in the C3 section, but I've been having trouble lately with one of my other cars, an 89 IROC Z with 350 TPI. I know except for.

hi guys ,my 85' C4 has an orrible wobbling idle .i set it at factory specs but when it goes in closed loop RPMs go up and down from 600 to 1000 RPMs.Sometimes when idle drops down it. C4 Tech/Performance - L98 idle surge - Ok guys! hi I'm new here and a new Vette owner, I'm a professional diesel engine tech and been a rat motor fan for years. I'm hoping you can help me. 1986 Corvette Rough Idle and Surging at Low Speed Issue Rough idle and surging often relate to vacuum leaks or faulty ignition components in Corvette models. For rough idle and surging, inspect.

Idle drops a bit for just a second after about 1 minute or 2 of idling, and it still sounds like a slight misfire while driving around town or on the highway every so often, but its way better and it. 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. C4 General Discussion - Surging idle on an 89 - Car = 1989 convertible, bone stock, auto trans. 44,000 miles. I will be driving at normal city speeds when I can feel the car surging. Not like.

C5 Tech - Why is my idle surging? - I recently had my car tuned with LS1 edit, and got everything pretty well straightened out, but for some reason my idle is surging. C4 Tech/Performance - Stock 85 w/Intermittent idle surge - I've been chasing an irregular idle problem all summer. I've replaced the O2, IAC and TPS sensors, checked all vacuum lines and. Did this just suddenly start or has it gradually gotten worse over time? The initial idle is way too high. When I first start my '87 it sits around 1,000 until it comes up to.

While I feel much better about the rough-ish idle after reading, I would like to get the idle consistently up to where it should be. We've discussed looking into the "health" of the idle air. Found 4 result (s) for your search 1985 corvette runs rough or idles up and down after engine is warm Mechanic's Assistant chat Customer: My 1985 Corvette runs roughly or the idle fluctuates after the. Reply Subscribe Tags 1985, 1987, 85, corvette, eratic, erratic, fluctuating, forum, help, idle, idles, irratic, problem, rough, surges, updown, vette Back to Subforum View Next Unread.

Lacking a better word for it, my 91 corvette has started surging. When idling it will surge up to about 1500 rpm then drop back down to normal. Sometimes it drops down to the point that it. C4 Tech/Performance - 85 vette still surging ; ( crazy idle!!! - I bought a MAF off of a guy on this forum and the problem didnt go away. It runs better but not the answer I was looking for . It. ive got an 1985 corvette just had the engine rebuilt. ive been noticing that when my engine gets up to running tempruture and i put it in park the idle go up and down almost to a stall but o nly.

C4 Tech/Performance - Surging at idle and dying sometimes - I have read several posts but am having a hard time figuring where to start. 86 that will surge sometimes when it gets hot, not. Broomfield, CO This tech paper will discuss the procedure for correct adjustment of the Minimum Idle Speed and for adjustment of the Throttle Position Switch (TPS) on the early C4. When car is cold or warming up it will idle normal, once the car has warmed to say 150 degrees it will not idle smoothly, instead it will surge between 0-1000 rpm's and will eventually die.

C4 Tech/Performance - Low idle and surging after warm up? - Hey everyone. New member here. I have a 1990 corvette auto that I recently aquired. Having problems with idling after. C4 General Discussion - 86 is "surging" at idle - My 86 runs pretty good for the most part, hell it has actually pulled an 8.5 on the 1/8th mile but lately it's been surging at idle, and im sure. Grumpy, I just bought a nearly flawless (interior & exterior) 1986 C4 coupe. When I drove it home from the dealership, I noticed a slightly rough idle.

C3 Tech/Performance - Help with won't idle & rpm surging problem. - 75 Vette TH400 Auto. 55,000 miles. Problem -Engine doesn't seem to want to idle, presently at 600/800 rpm in drive. C4 Tech/Performance - Engine surging - Got my car running and 10 miles down the road it started surging and stalling continuously until I had to idle home. My '86 TPI has been having intermittent high idle problems. A few months ago, I reset the idle speed + adjusted the TPS. All was fine. In the past few months, the engine would start and idle.

C4 Tech/Performance - Please help! 1985 c4 running rough at idle - Hello i am looking for advise. my 1985 c4 corvette recently went for a Mot ( I?m in the uk ) and it failed on high Emissions. I always. Re: Surging @ Idle ??? (Brett C5 SCCA) Have you tried the idle relearn procedure? I had a similar situation after I put in my 3500 rpm Vigilante. The idle would like to hover around 500 rpm's. C4 Tech/Performance - Surging idle on an 89 - Car = 1989 convertible, bone stock, auto trans. 44,000 miles. I will be driving at normal city speeds when I can feel the car surging. Not like.

Reply Subscribe Tags c4, corvette, idle, l98, l98corvettesurgingidle, stop, surges, surging Back to Subforum C4 Tech/Performance View Next Unread. My '85 4+3 starts like bat outta hell, but after 1-2 minutes of idling, it begins to surge and dump idle. I took it to a VERY reputable tuner and he checked for leaks, set the IAC counts, and. C4 Tech/Performance - 1987 corvette engine surging - Hey guys, I have an 87 corvette that when driving between 40 and highway speed the car surges. It feels like you are pushing and.

My 86 has been has been doing this off & on for the last year or so, however I barely put 500 miles on it this year, When car is cold or warming up it will idle normal, once the car has warmed. C4 Tech/Performance - Surging idle. smooths out with vacuum leak - 1985 Corvette with Vortec heads. Freshly rebuilt. Brand new plugs. No trouble codes. New fuel pump relay and harness. C4 Tech/Performance - 89 runs rich and idle surges. - Hi All, first post here. I bought an 89 about a month ago. It ran ok but was in need of a tuneup. I.

Re: 86 Vette with surging idle (no codes), any suggestions ?? (qkvette) Im kinda thinking you have a "hunting idle" more so then a surging one. A hunting idle seems as if the car cant decide where to. Corvette C4 Forum - idle surge problem solved???? - Well, so far so good I cleaned the throttle body, took the tps off and cleaned it and so far no surge and no irratic idle. One thing I want to point out-. C4 Tech/Performance - 1985 Corvette Will not maintain Idle / idling extremely rough. - Greetings everyone. I am a novice and my friend is an.

C3 Tech/Performance - RPM Surges @ Idle. Cause? - Just started doing this. From a nice steady RPM in the past, to now a surging RPM that almost lets the engine die on the low end. Most. It always idles rough not real rough but not steady all the time. It will sometimes act like it wants to die, but the rpms dont drop that far they will surge down to about 400 sometimes lower. jo wkck1w f3jv 5igyttq iibx9r j0p tyr9 y8pb 41o3 c65hdfr