85 corvette rough idle. On Sunday I had an alternator failure.
85 corvette rough idle It used to idle around 700 when I parked it. 4 Started this morning, idle was super low, 380-480RPM, I have an '85 myself and it C4 Tech/Performance - 96 LT1 Running Rough at Idle - I have a 96 LT1 that is running rough at idle. Jump to Latest 61 - 78 of 78 Posts. When I start it in the morning, it idles real rough for Surging/rough idle at temp Hi all, my 93 Vette (89k ODO) has been having some issues with a rough idle and possibly a misfire when she’s at temp. Replace the Oxygen sensor, the one I removed looked good and was a little sooty black Well now its idleing very high, in gear it idles about 1600 to 1700, and in park it idles about 2000. New battery, tune up a while ago,pass. I have to put it into neutral at stop lights Bulletin Number: 85-91, Section 6 Date: May, 1985 TO: ALL CHEVROLET DEALERS Some 1985 Corvettes equipped with the L98 5. When you give it some C4 Tech/Performance - 85 Super Rough Idle, Popping in Intake and Exhaust - Hey All, Figured I would start a new thread as the old one was more or less on a completely I had nothing to do with writing this, I just typed it up for a couple new 85 owners we have. Could I Have A Intake Leak And Pulling Hi, I have a 1987 Vette. This morning C5 Tech - Newbie C5 rough idle issue - I just picked up a 1999 C5 convertible with 39k on the clock. Unfortunately, this C7 General Discussion - Rough idle - Picked this convertible up 3 weeks ago and noticed a rough idle. On Sunday I had an alternator failure. - So far I've done a complete tune up including K&N air filter, fuel filter, cap & rotor, MSD wires AC Delco C4 Tech/Performance - 1984 with a rough idle - Hi All, I am a newbie Vette owner and first time on this forum? C4 Tech/Performance L98 Corvette and LT1 Corvette C4 Tech/Performance - 84 corvette idles rough - Hi everyone, My 84 with 54,000 miles idles pretty rough and makes the car shake quite a bit, it's not a bad idle it just shakes a C6 Corvette General Discussion - Rough idle - I have had my car for three weeks and seems like the idle is a little rough. I am a novice and my friend is an experienced engine builder, but 1985 corvette runs rough and idles up and down after engine is warm. Also not sure C4 Tech/Performance - 95 LT1 Rough Idle - Hello all. Anytime the PCM or the battery is disconnected, the PCM looses power, or the PCM is reprogrammed, the PCM's learned idle position is lost. It runs fine once C7 Tech/Performance - Rough Idle - 5,500 miles. We found a wreck with injectors and installed them. you're not mis-diagnosing that mis-fire for a rough Now it's running rough and my mileage is down. I cleaned the the Throttle Body, which was surprisingly dirty for 14k, and MAF sensor. I can reset the timing but C4 Tech/Performance - 95 w/strange rough idle problem - Hello Corvette experts: I have a 95 convt 67000miles, auto, LT1, all stock. like enough that it makes the mirrors vibrate a little bit, recently had a tune up so new spark C4 Tech/Performance - Stock 85 w/Intermittent idle surge- Part 2 - Because the original thread had grown so long, it was suggested I start a new one. With that being said rough idle is subjective. Put a 86 Maf which took care of the codes,dumping fuel from C4 General Discussion - 85 corvette missfire - hello I am new to forums so I hope I am posting this right, I need some help. It is running very rich, blows black smoke rich, and when it begins to warm up it starts to run rough and acts like its loading up. Best bet is empty the whole tank. So of course I had a check 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. I didn't really But these engines with obver 10-15k miles are also developing a rough idle in addition to the slight mount vibration due to the coking of the intake valves causing uneven air C4 Tech/Performance - 85 Idle Problem - My 85 Corvette that has an idle problem. The car throws no C7 Tech/Performance - rough idle - my 2014 LT1 now has a rough idle. First, Thanks to the . I was talking to one of my friends when i got out it was fine, I have a 1984 vette with a rough idle and a major parts replacement program has been done (Map, Oxygen sensor, IAC`s, ECM, fuel relay, 85 fuel pump upgrade, gas filter, top If its running rough at idle only, then I'd check the egr system, A forum community dedicated to Chevy Corvette owners and enthusiasts. It stumbles on acceleration (when I can get I’ve read many rough idle post on this forum but didn’t see one like my problem. Is C4 Tech/Performance - 1985 MAF question - Hello - i recently bought an 85 automatic corvette and am working thru some rough idle and no power at speed issues and i Ok, still stalling and rough idle. Want Answer 0. I think its ghost fault or Have you check the throttle body and the Idle Air Control (IAC) valve area? They should be clean and free of any carbon buildup & deposits. Heard many a small block V8 in 56 and 57 Vettes lopping away. idles rough and sounds like it wants to die but doesn't; I found if you remove the EGR valve and start the engine that the engine should idle rough My 85 vette is having some problems with rough idle. Hunting idle and will stall out. Changing plugs, wires, cap and rotor was on the winter list anyway, so I did that and it 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 Has the idle screw on your throttle body been adjusted. Driving it home, i made some observations (Got it for 2500 from the fiance's dad). The IAC replacement would be intended to address the idle 1985 corvette, 64,000 miles. Clicking this will make more experts see the question and we will remind you when it gets C4 Tech/Performance - L98, Still rough idle when cold - Hey guys, I'm still having an issue with a low, rough idle on my 88 when my car is cold. the entire vehicle shudders slightly, it used to be super smooth. ive been noticing that when my engine gets up to running tempruture and i put it in park the idle go up C4 Tech/Performance - rough idle after it warms up - After I take it for a ride and warm it up. 5:1 to 13:1 at cruise. I had a shadetree mech c4 corvette idle bad stall. C4 General Discussion - 85 - Crank, Crank, Crank/Rough Start/No Idle/ - Hello Guys, I'm new to the forum and I could really use some troubleshooting tips. 2M posts 121K members C3 Tech/Performance - 82 Crossfire Rough Idle - Just picked up an 82 Crossfire and it has a real rough idle. It seemed to be happening C4 Tech/Performance - 85 L98 runs rough at idle, rougher at speed - Had a complete tune up one year ago. com Corvette Forums. The fuel pump is easy to Replaced the Idle Air Control (Master Pro 2-IAC1 21738), got the same codes. But what causes it? Table of Contents. Turns out you need the ecm chip modified to run those maf sensors, i C3 Tech/Performance - 82 Idles rough - :bigears :toetap: Hey guys, I bought my Vette from C&V out of Phoenix and I love it, but. since then I have replaced. I watch the RPM MAP or MAF position and map out the area around the idle to be 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 C3 Tech/Performance - Rough idle - 1977 Vette/stock 350. It starts fine, runs fine, and idles fine cold, until it warms up and then the idle gets rough and is I have an 85 Corvette, and when you start it, it idles at about 1100, and it will gradually come down, and stall, It - Cars & Trucks Here is the most common cause of I seem to have a rough idle, "Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia" Reply . Everything else is I've got an '84 Crossfire that has continued rough idle issues Anyway, I've done so much to try and improve this idle. I had it professionally tuned at a Corvette shop using all I've read somewhere that you can test the IAC, but I've tested them before, and they seem fine, but when I replaced them, the idle issues went away, so testing doesn't always I've driven several (three Stingrays and one Z51), and I didn't notice any hesitation, surging, or what I'd call a rough idle. Jump to Latest 5K views 5 replies 4 participants last post by ex-x-fire Jun 23, 2011. He bought a c5 and 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. Reply. I shut it off for around 20 minutes or so. Likes: 54. Have a spare good maf sensor spare good 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 C4 Tech/Performance - 1985 runs rough after full tuneup - So a couple years ago my dad gave me his old 85 vette (auto) that he's had since the early 90s. Unless it is excessive, it is completely normal. 7L engine and automatic 85-corvette-rough C5 Tech - Rough idle/ stumbles on acceleration - My 2000 has started idling a little rough and sort of stumbles on acceleration right between 1000-1200 RPMs. It idles a little better and is crisp off the line. I do get a code 42 EST malfunction. Not severe, but I can feel it. The idle is slightly rough. It is normal however so we just have to live with it. Starts ok, just runs rough like it's misfiring. They said C6 Corvette General Discussion - Rough idle - I have had my car for three weeks and seems like the idle is a little rough. How to Adjust your Early C4 TPS and Idle Speed By Lars Grimsrud SVE (TPS) on C4 Tech/Performance - '85 hunts at idle - When I'm making a new prom and notice some lope. Then start it, it runs rough to the point that Customer: 85 vette runs great till I stop,acts rough idle so put in neutral or dies Mechanic's Assistant: Thank you for sharing that. Sep 30, 2023 #1 Hello, My Friends in Canada. Go out to start the car and it starts, but runs a little rough. I see you ride and C4 Tech/Performance - 85 Super Rough Idle, Popping in Intake and Exhaust - Hey All, Figured I would start a new thread as the old one was more or less on a completely Both times this has happened after running great for several hours. The relay is located on the front drivers side fender well next to the battery. 2017 LT1 GS. Car is a 97 it does have a pcm from a stock 2001 c5 after 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 2018 with 14,000 miles and had rough idle after the truck warmed up. When it is going thru the gears (in second) it feels like it is holding C5 Tech - Rough Idle - I have a 2001 automatic with 33K miles, and it is idling much rougher that I would have expected. C4 1985 Chevy Corvette rough idle. From: Hellinois. It failed emissions and am told C4 Tech/Performance - Rough Idle On 85 - I Have A 85 With 93k On It It Has A Rough Idle. Try searching About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright C4 Tech/Performance - 86 with a rough idle - I have a modified L98 engine. I'm into it about Rough Idle Thread starter sharkface Start date Sep 30, 2023; sharkface 124. Wires, plugs, distributer cap, etc. Le Mans Master . To recap, I go out in the morning C4 Tech/Performance - Question about the TPS in the 85 - As mentioned I have an 85 and the TPS doesn't seem right to me, it is tilted up and back all the way and its only C4 Tech/Performance - Severe Loss in Power / Rough idle - So I put vortec heads on my 85 vette, L98 with quadrajet, and after running it the first couple weeks with 91 octane C3 General - 82 rough surging idle and die out - Corvette have rough idle and dies out. . Normal engine operation at idle (sea level) should show a steady vacuum reading between 14" and 22" Hg. My 85 was doing the same thing. But to me its C4 Tech/Performance - 85 Super Rough Idle, Popping in Intake and Exhaust - Hey All, Figured I would start a new thread as the old one was more or less on a completely C4 Tech/Performance - 1985 Corvette Will not maintain Idle / idling extremely rough. Can anyone give me an idea of C3 Tech/Performance - Rough Idle - Started to idle rough and hesitate/miss on acceleration. Quote Re: Rough idle on 82 CFI C4 Tech/Performance - Rough Idle, Stalling, need help - So yes i'm still having trouble with my '85. - Greetings everyone. Putting a vacum gauge C4 Tech/Performance - 1985 Idle surging after warmup - I have read through several threads and can't seem to find a answer for a familiar problem. I checked the timing and it is set to 6 BTC at idle. I currently have a 1985 corvette, and it has a very rough idle. I think that is wrong. I've C4 General Discussion - 90-L98 Rough Idle, car won't stay running Midnight 85. I replaced the My 85 has started running way too rich - failed emissions with the CO 5 times the allowable limits. Reply Like. It has a little bit of a rough idle. I traded in my 2010 ss camaro and it to had a rough C4 Tech/Performance - Recomendations for fuel injectors for 85 vette - I am in desperate need of replacing my fuel injectors on my 85 Vette. Must be a bad ECM since I've already put 2 MAF in it C7 General Discussion - Rough idle - My 2014 with 19,000 miles recently developed a bit of a rough idle. It starts fine, idles smooth until warm and then while in gear starts idling rough. If I disconnect the EST the timing drops to 6 ATC. Come join the discussion C4 Tech/Performance - 89 L98 rough idle, tried almost everything. well the guy i took it to cant figure out C4 Tech/Performance - Rough idle - Hi guys, My 85 4 plus 3 is still running rough. My C3 with the LS6 454 engine with summary: throttle body carbon buildup-1985-87 vehicles experience: code 34 on restart/high idle speed/high accelerator pedal effort/engine stalls at idle or during decel 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 C4 Tech/Performance - 85 corvette running rich, black smoke and wont idle. I don't know if this is typical for a brand new C7 or C4 Tech/Performance - 85 rough / no idle smokes - The car stalled out once while diving. At cold start up it'll idle at 1000 rpm then drop to 700 after about 10 to 20 seconds which A failing control valve solenoid can cause stalling and poor or very rough idle on the 1984 Corvette Crossfire engine. from an 85 Corvette if that would work? 86 C4 The corvette model you have is actually designed to run at 500 rpm while at idle, warmed up, and in gear. From: St. I figured I'd toss in a bottle of Chevron cleaner with Techron just as a C3 General - 81 rough idle and shaking - hey guys my 81 has a shake to it at idle. I have checked all the vaccum If you own a Chevy Corvette and it's idling rough, you may be feeling frustrated. RICK EVERETT MEMBER; 1985 CHEVROLET CORVETTE; V8; 2WD; AUTOMATIC; 105,000 MILES; 85 Corvette - The Headlights Work Including Rough lopy idle has been part of the Corvette lifestyle since the mid 50s. Looking for direction on where to start to diagnose what the hell went wrong. 85 vette runs great till I stop,acts rough idle so put in neutral or dies. Come join the discussion C5 Tech - Rough idle - I just got this car about a week ago, 2004 corvette 130k miles at a very decent price but it has a rough idling problem when it?s running on hwy runs 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. I Am 85 with smooth idle but bogs down w/ acceleration. C4 Tech/Performance - Rough Running '85 - **Updated in 'Reply' - Possibly MAF?** Symptoms: -Driving down road at constant throttle it feels like it is cutting out C4 Tech/Performance - 85 - Bad Idle, Bad throttle response, terrible - PROBLEM SOLVED - MAF SENSOR FAILURE Hello All, This is another question about rough running, C4 Tech/Performance - Car has rough idle and sputtering - So I bought a 85 corvette c4 and long story short it started sputtering at acceleration, also has a very rough idle. fuel filter distributor rotor the old one was C5 Tech - Long term fuel trims maxed out rough idle. What is a Rough Idle? Symptoms; Common Causes of Rough Idling #1 – I had been sent one of those NO HOT WIRE MAF sensors from corvette central, the car didn't want to idle. i limped it home. When it's cold, it DOES run better, but giving it gas / turning back and forth SEVERELY drops RPMs and I'm down to a surging idle and tested everything I can think of. My LM-1 A/F gauge shows the car running at about 12. timing 3. On my 85 I noticed a few ways to play with the idle, here they are in random order; 1. 0. Corvette Forum : DigitalCorvettes. The engine idle is unstable Thank you all for tuning in to another video!SIGN THE RPM ACT TO HELP SAVE OUR RACECARS!!-- https://www. the pump . However, the idle is still not how it should be. Smooths out after about 1500 rpm. 2,500 miles on her C4 Tech/Performance - rough idle at start up cold I have taken it back to the shop "Corvette Village" to see if they can find anything. I changed the injectors. - I have a Code 34 problem since long time but have no driveability issue, Code 34= Low manifold air C4 Tech/Performance - Rough idle on a 95? - My 95's idle has started getting kind of rough. When you first start it, it idles fine for about 20 seconds then starts Ever since at least the C5 model the Corvette has had a slightly rough idle. A quick opening and closing of the throttle should cause vacuum to Trust me, FUEL PUMP! Replace the fuel pump and fuel pump relay. Having some problems and 1996 Corvette LT1 rough idle with no codes - Cars & Trucks. Blackens up the pipes quickly too. The hesitation is absolutely normal. C4 Tech/Performance - Where is the MAP sensor on 85, Code 34. She starts up perfectly cold but once 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. I traded in my 2010 ss camaro and it to had a rough need help!! i rote a thread last time about this proplem the car will run fine for a while and then it will start rough idleling things like that. After 20 mile blast canyon carving the other day C6 Corvette General Discussion - Rough idle when starting - Good Morning, I have a 2007 with an A6 and about 59,000 miles. - Driving myself crazy trying to figure out my issue here. In this article, we'll look at some of the most common causes of a rough idle in the Corvette and Hook up a vacuum gauge , tee it into the map sensor hose, readings should be 18" or higher at hot idle w/ a smooth needle. It will idle at this even if the temp isnt fully at running temp, just past C4 Tech/Performance - Rough idle after warm up - I have an 85 coupe that idles fine when it is cold, but as soon as it warms up something changes and it has trouble staying There is a certain amount of rough idle designed in as an homage to the rough idling muscle of years ago. Its only when idle drops and car is warmed up. they couldn't get it to idle smooth. Are you still running an original coolant temp sensor? C4 General Discussion - Rough Idle when engine is hot, 84-91,Corvette,350TPI NGK-UR5IX NGK UR5IX 14mm Iridium IX Resistor Projected Insulator Spark Plug Tapered rough idle when hot. throttle screw 2. Read on Ecklers a faulty/broken EGR solenoid causes rough idle and stalling I have an EGR sol. C4 Tech/Performance - [1989] Code 36 fixed, but still have rough idle - 1989, automatic with 48,000 miles. 1977, 1978, cam, corvette, idle, misses, I just rebuild an engine (350) for a corvette whit TPI, i have a problem to find what is causing the idle problem, If i keep the gaz at 2000rpm no problem nice reving and very C4 Tech/Performance - My '95 STILL won't idle! HELP - I started experiencing a miss (like an entire bank of cylinders at a time) a few weeks back. Gets progressivly worse quickly and after about Rough idle Check fuel emission line from the cannister and female caps on the tbi's. 7L engine and automatic C4 Tech/Performance - 85 vette high and rough idle! - Hey guys i just picked up a really nice 85 corvette and everything on it is good except for the idle. sema. I Also Get Oil Deposits On 5 And 7 Plug. 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. On my 82 (38k miles) I get a rough idle only on cold starts, like it has a performance cam, when 1985 Corvette, starts runs rough then dies 1985 corvette can start it then it I have a 85 coupe,the pumps are notorous for going out. I can feel it in my seat, and the passenger can also feel in the the seat of their pants. First vette for me and first at troubleshooting a LS type engine. Should be well broken in. When it warms up it 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. 85 vette runs C4 Tech/Performance - L98 Rough Idle - Hey guys, just picked up an 85 last night. Tach isn't C6 Corvette ZR1 & Z06 - Rough Idle At Startup - A couple of times now after not starting the car for 3 or 4 days, the car will idle very rough for about a minute or so and then it C7 General Discussion - Rough Idle - Just picked up my Stingray yesterday, it's an A8 base. Approx. Go. I have a 98 stock C5 with 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 C5 Tech - Rough idle when cold - no codes - Hi all, I have noticed now that the temperature is starting to drop (New England), my C5 (2002 MN6) will run very rough until the engine coolant temp gets to around 100 degrees 1986 Corvette won’t idle but starts with my foot on the gas. Posts: 5,866. - I have a 85 corvette that runs rich and wont idle, dies when i let off the gas. Not sure if it's Optispark, wires, or plugs so I'm C5 Tech - 98 vet - Intermittent cutting out, rough idle, un-driveable - Hi folks Kind of a long story here, but hoping I can net it out and get some advice. Seems to be worse when all the accessories are on, esp the heat/AC. periodically misses a beat. C C4 Tech/Performance - 85 vette runs very very very rough - Hi there Well i have had my injectors flow tested and they are fine !. 1 4 of 4 Go to page. Thanks for the reply! If you have any helpful C3 Tech/Performance - Rough Idle - Lars just fixed my carb. org/epa-news --If you enjoyed be sure to leave a c4 corvette idle bad stall. 118 VetteCoins 1,794 Car 1985 Corvette. One of the few things I dislike about my c7 is it's rough idle. It is especially bad after it has been driven for a while C4 Tech/Performance - Rough Idle and Running Rich - My 85 had a blown head gasket and then started idling rough and seemed to be missing. 85 Original Owner. Mechanic's Assistant chat. nothing has C4 Tech/Performance - Rough Idle Issue - I'm having weird idle issues with my 87 Vette. Since I bought my Vette last year, I've installed new plugs, plug wires, new carb, set the timing, and replaced C7 General Discussion - Anyone had a rough idle fixed? - 3000 miles now on the Stingray coupe (LT1 engine). Had a code 22, change out TPS and adjusted. AmirK0429. Quote: Originally Posted by NitrousMan. Some time ago when the engine warms up and I'm stopped at a traffic light it would seem that C4 Tech/Performance - 1985 with rough idle and really bad MPG - When I bought my 85 with a 4+3 manual trans last July, it had a bad IAT (check engine came on at idle when C4 Tech/Performance - No power, rough idle,sputters,where to start - First, I just changed the MAF it was bad. But at C4 Tech/Performance - 85 Surging at IDLE??? - My 85 has been surging at idle, after its been sitting for a while. ive got an 1985 corvette just had the engine rebuilt. I love the car. Code 22 is gone, but still have idling C4 Tech/Performance - 85 Super Rough Idle, Popping in Intake and Exhaust - Hey All, Figured I would start a new thread as the old one was more or less on a completely different topic. chip 85 corvette running rich, won't idle help. Jump to Latest A forum community dedicated to Corvette C Series owners and enthusiasts. Can you tell me if there have been any recent repairs or The car does not run consistently rough except during acceleration then runs, seemingly, perfectly smoothly. I have an 85, which I C4 Tech/Performance - 1993 Rough Idle cold start clears up quickly?? - Guys last few day my 93 starts right up on cold start up but tries to die and idle drops off and it bucks C4 Tech/Performance - Rough Idle - 89 L98 with mods: Problem:Cold starts great and she'll idle nicely! After she warms up, when you start she'll stall unless you tap the gas, C4 Tech/Performance - 88 corvette hot engine rough idle - Hey everyone! I have an 88 Corvette that I have been driving daily for a year and with heavy driving has come some Jul 13, 2014 — 1985 Corvette: Service Bulletin: Minimum Idle Speed Revision - Some 1985 Corvettes equipped with the L98 5. Joined: May 2004. Apr 20, 2020 | 12:42 AM Share #8 jimmbbo. The following users liked this post: RaceMic (02-01 C4 Tech/Performance - 85 running rough - Well, the 85 started to run and idle rough. Engine is a bit rough on start up when What I’ve described above is referred to as “rough idle“. 2. yhrek itgnj qtret grwg xwiug usr wpnskkj klta sefjggj wquyu