87 corvette rough idle. 49 60 ft - +1600 DA Under the knife again.

87 corvette rough idle A C4 Tech/Performance - High Idle problem - I have a problem of High Idle on my 88' TPI C4. Its been well taken care of but he is telling me at idle it runs rough and the check engine light is on. My 87 4+3 car has 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. At 700 I am hearing popping sounds coming from the air inlet. 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. I recently took it on a 400 C7 General Discussion - Anyone had a rough idle fixed? - 3000 miles now on the Stingray coupe (LT1 engine). sema. If there is anything above I’ve done Alright, went and learned how. amazon. (or get out and open the throttle screw a bit) Best ET 10. SOLVED! Running rich. com/NewYall-Injection-Injector-Control-Pickup/dp/B07FPNBKT8/T-SHIRTS & MERCH AVAILABLE!ht C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine IAC Gone Bad? Symptoms? Rough Idle and hesitationPLEASE HELP! Reply Subscribe . 5 MS. every now and then it will start fine. "Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia" Reply . It just seems to happen randomly. '99 Grand Vitara JLX, 2. 87 @ 123. All stock. It comes and goes and can happen at. My 87 has started to act up. Somewhere around 25 to 55 counts for the IAC with the engine fully warmed & at idle is normal. I do get a code 42 EST malfunction. 1987 corvette replacement for harmonic Have a 22r engine that runs rough on idle and exhaust spits smoke. Could be your timing on it, or the distributer could be off a notch or two. If the motor is smooth other than at idle the chances are good that's it's normal operation. I have check and repaired vacuum leaks. Thought I had it fixed, but after a few days driving it around town with no problems (no highway) but it has returned after a 30-40 mile Highway/freeway trip yesterday. The code comes up with the mass air flow sensor (code 34) and the o2 sensor (code 44). C8 Z06 Discussion; EDIT: Article I read was in Corvette Magazine June 2020. As it warms up the idle increases. I love my Corvette and really wanna get her running smoothly . Past 2000 rpm she starts to run fine again. You can test this by pintching, or disconnecting the vacuum source to the EGR. When the fourth generation Corvette was introduced in 1984, many innovative build techniques were implemented. If you tap on a sticking EGR valve lightly with a heavy screwdriver it sometimes will reseat the EGR valve pintle. Go. Full Forum Listing. Advanced Search Cancel Create thread The engine and transmission were rebuilt before I bought the car last March. TPS Voltage is set to . Joined May 10, 2011 · 58 Posts. Intros; In Memoriam. R. I need some help! I've done a lot of work on my '87 C4, new cam, ported out heads and intake manifold and plenum. It has a very rough idle. The check engine light comes on when I am driving. 1981 Chevrolet Corvette; Open Questions: 0 answers. 209 What I’ve described above is referred to as “rough idle“. Browse Categories Answer Questions I've a 1981 Vette that idles very rough with a cold engine start. Also developed a popping sound from the exhaust at idle No codes are being thrown Only mods are LG Longtubes with rear 02 sensors deleted (Done 3 yrs ago) 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. 7l pfi engine (vin codes f 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. C5 Tech Corvette Tech/Performance: LS1 Corvette Technical when the minimum voltage varies. Battery we bought is new. C4 Tech/Performance - Rough idle and stumble when in closed loop - I've got a 1986 c4 corvette with an 87 l98 with long tube headers. With a fuel injector that is not properly atomizing fuel properly, your Corvette is going to have a difficult time idling. Do others experience this? Thanks for the input. The fuel economy dash data is not showing and running poorly. '87 Honda Super Magna '80 Kawasaki 1000 LTD. Thread Tools Search this Corvette Forums. Rough lopy idle has been part of the Corvette lifestyle since the mid 50s. My second thought is fuel filter and fuel pressure regulator. LOG IN; REGISTER; Forums. Thanks in advance for your help! Any input is greatly appreciated. When your Chevy Corvette has bad fuel injectors, you may notice a rough idle. Your My 87 idles perfectly except is a bit rough when in Drive stopped at a light. The 1984 engine uses a manifold vacuum source to operate the EGR valve so a strong vacuum flow from a stuck open control valve solenoid would allow EGR to flow at idle. Best Corvette Batteries; Best Corvette Car Covers; About Us: Corvette Web Central | Owner Bio: Chris Trautman. . Has new plug, wires, cap, rotor, In drive it idles around 550. I replaced the iac and reset it by jumping the a and b on the aldl, turning the key to on, waiting 30 seconds, unplugging it, turning the key to off and Idle problems 5th Gen Camaro SS LS LT General Discussions. air, bad, control, corvette, on my 82, my idle is getting better with each little item I do. Reving the engine off idle gradual up to 2,000RPM's, if the IAC is working correct, IAC counts will increase higher numerical. Posts: 508. I have a 87 Pontiac Formula 350 TPI. When I took it for a ride it ran great, until I punched it. Beyond the rubber hoses, the intake manifold can have a leak at a connection point using a gasket. No codes its totally fine when its cold but once is warms up it runs like crap. 66 - 1. This occurs because the injectors are not providing a consistent flow of fuel, causing the engine to operate unevenly. I’ll be so happy when I C7 Tech/Performance - rough idle - my 2014 LT1 now has a rough idle. With a scan tool hooked up & your Corvette running at idle, watch the IAC counts carefully on the data display. When I got it up to around 70 it was running great, when I slowed down the car felt like it had a And once you sort out the offending rough idle / performance issue, that may improve things. If tapping on the EGR valve smoothes out the idle an EGR valve replacement may be necessary. 4MS. The car has about 70 k miles and i owned it for 10 years before i sold it to him. It stumbles and hiccups when accelerating from a stop as well. My first thought is check for vacuum leaks. CorvetteForum - Chevrolet Corvette Forum Discussion; C7 C4 Tech/Performance - 87 runs rough - My buddy has my old 87 that i sold to buy a zr1. The digital and analog temp guage reads about the same when running down the road. 5 - 0. M In a past post where I said that my automatic enters gear a My Corvette Life: Episode 438L98 C4 Corvette IACVhttps://www. rough idle, how it runs, cooling, the brakes, transmission shifting, or the lack of power at (X) rpm etc, the guys are frustrated as they spent time and cash but the issues is not resolved! the "PROBLEM" is most people won't take the time or effort to diagnose a problem by logically isolating and testing each component before C4 General Discussion - 87 Idle - Hi group My 87 idles perfectly except is a bit rough when in Drive stopped at a light. Tried this The most common signs of bad spark plugs in Chevy Corvette are poor acceleration or hesitation, rough idle, engine misfires, poor fuel economy, check engine light illuminates, engine knocking noise, and sometimes hard 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 distribution at idle. Typically fixing a vacuum is a simple process of replacing the part that is leaking. When I am driving it, it seems ok, it only happens when It doesn't really have a rough idle per say it just idles down way too low and can be smoothed out by throttling it to the correct 950rpm I think it is set on. periodically misses a beat. I'm still looking. Im 8] Allow the engine to idle for 5 minutes. The vacuum leak would then be causing the rough idle. In addition, a reduction in power and oil loss can be indicators that the blue exhaust smoke is caused by an internal engine oil leak. Any suggestions? C4 Tech/Performance - Yet another rough running L98 - I have an 87 L98 that has been rough running since I bought it 5 years ago. I even pulled the leads C3 Tech/Performance - Rough idle - 1977 Vette/stock 350. that is if it even starts at all. 101k miles, Automatic. A forum community dedicated to Chevy Corvette owners and enthusiasts. B. Also C4 Tech/Performance - '87 check engine light problems - I bought my '87 Corvette in May. 4. But what causes it? Table of Contents. From: Livonia Michigan. Explore Our Forums. 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. Save C4 Tech/Performance - 1994 Running hot/ surging idle issue - My 94 Coupe runs fine when started and runs nice and cool going down the road. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine 1987 Rough Idle in Open Loop. In rare cases, it is caused by misfires from a bad spark plug or coil. 2] Restore the PCM battery feed. Idle problem on the Corvette cleared up immediately. The most common cause of a rough idle is misfiring. Is this normal for this engine. Holding in the case of my 87 means that it will pump up and quickly drop. It would come and go, usually on the highway after about 15 minutes of driving. Corvette Forums. I think GM used that cam for the big block high performance engines from 1965 through 1971. How to Fix It. Mechanic said it feels like ignition is shutting down and then coming back. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Yet another rough running L98. Its only when idle drops and car is warmed up. although I don't have a surge condition like yours, my idle does fluctuate slightly, but runs great. We changed the fuel pump, fuel filter, -fuel pressure is good. However a few months ago i was driving when suddenly i felt the car start acting strange such as surging when i let off the gas, soon enough after noticing that, the SES light came on for a code 34. Some days it runs perfect at idle/low speeds and highway speeds. The SES light would come on, and a very noticable loss of power. c4, code, C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info When you disconnect the mass air flow, it runs real rich & rough idle but it stays running . Thread Tools Search this Thread 04-20-2012 | 06:30 PM Rough Idle and hesitationPLEASE HELP! Subscribe Reply Subscribe . A sticking EGR pintle is common on 1982-1991 cars. blkvette. Come join the discussion about performance, modifications, racing, restoration, classifieds, troubleshooting, maintenance, and more! Show Less . The car will idle smooth, than a rough idle for 2 seconds, and keep on repeating. Menu. Home; Best of Reviews. Manual Transmission Perform the following procedure in order to return the learned idle to the correct position: 1] Turn OFF the ignition. 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 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. 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. Funny thing is, it doesnt do it all the time, and I cant MAKE it do it either. You might also check the lean/rich idle mixture and adjust as necessary. Thread Tools Search this Thread Jun 18, 2017 | 02:02 AM Share #1 From: Edmonds WA. It does however idle a little rough, at around 550 rpms. Valve job on heads, new water pump, spark plugs and wires. When first started the engine idles fine but completely boggs with any throttle input. My thoughts would be that the timing might be out, or the idle air control motor might be messed up, or you need to adjust your idle. Fuel pressure is strong and steady. Sort by Oldest first Oldest first Newest first Most reactions. That may be a gasket at a connection point or a rubber hose that has dried out and cracked. 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 when hot any help thank john . My mechanic checked it with a scan tool. Thread Tools 1987 C4 Z51 Corvette Province ON. L88 and ZL1 got different C4 Tech/Performance - Rough Idle Problem,,,,, - My '87 seems to be idling very rough from time to time. the dash and guages are still out of the car, thus the speed 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! C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, (starting, stalling, rough idle, how it runs, cooling, the brakes, transmission shifting, or the lack of power at (X) rpm etc, the guys are frustrated as they spent time and cash but the issues is not resolved! Brainiac Fact for C4 Corvette Start Sequence! The ECM also pulls the fuel pump relay which makes the contacts and parallel's it electrically with the oil pressure 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 smooth but once i park I can feel the engine rought idling, sometimes not often but happens where I turn it on and it?ll turn off idle down to C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine SOLVED! Running rich. I use premium fuel. C4 Tech & Performance Mike87Coupe. 545 Volts. Any thoughts are greatly appreciated! Many thanks! LOG IN; C4 General Discussion General C4 Corvette Discussion not covered in Tech. 1986 Pacecar - Yellow, Flowmasters, Euro's, Splash Guards - sold to a nice family in KCMO area A few days ago I started to develop a slightly rough idle and a decent hesitation upon acceleration from idle to 2000 RPM. 0l o r 5. It will idle 500-600 RPM cold and stumble. 791 @ 98MPH K&N Air Filter w/ Opened Air Box, Hedman LT Headers, Borla ProXS Mufflers, Polished SS LT1 Tips, AIR Delete. My third and final thought would be ignition control module. Almost like it is searching for an idle speed. Our vacuum line are very old and been through many heat cycles. I purchased it off the original owner and it is bone stock and in mint condition. C4 Tech/Performance - rough idle help please - My 86 corvette runs rough at idle around 500-600 rpm. Discussion starter · #61 86 C4 Corvette - 14. C4 Tech/Performance - TPI Running roughhelp - I wanted to give you guys a idea on my whole set-up so you can better help me: Engine: Stock 1982 Corvette Crossfire Engine, cast iron heads No modifications to engine Tested good on compression, new stock oil pump and stock water pump Ignition: Stock remanufactured HEI Thank you all for tuning in to another video!SIGN THE RPM ACT TO HELP SAVE OUR RACECARS!!-- https://www. I was due for upper gasket changes, so i replaced: -All top end gaskets (plenum/runner/intake manifold) -EGR Valve -EGR Solenoid -Injectors (bosch series 3) Customer: 87 corvette every time it is started it has a real rough idle and dies when you hit the gas. When it is completely warmed up it runs much Hi All,I need some help! I've done a lot of work on my '87 C4, new cam, ported out heads and intake manifold and plenum. But When stopped in traffic, the temperature goes up pretty fast on C4 Tech/Performance - Rough Idle-Need Spare Injectors for 87 - 88 - I have been fighting a rough idle for some time and finally realize my problem may be the Multec injectors on my 89. they will be up around 2. Other days it idles rough 2002 Chevrolet Corvette Z06 (Red/Mod-Red) 2005 Pontiac GTO 2002 Pontiac Trans Am WS6 yep, occasional, slight, short duration, rough idle, shakes the car, all temps, steady @ 800 rpm, no difference if clutch in or outjust feels like the dawgs want let out . 7 VOLTS AT IDLE 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 C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Mar 2, 2015, 08:13 PM How-Tos on this Topic Last edit by: IB Advertising. Is the SES light on? If so, 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. Ater taking off, it runs fine. Likes: 8. Once it gets to closed loop it improves dramatically However a few months ago i was driving when suddenly i felt the car start acting strange such as surging when i let off the gas, soon enough after noticing that, the SES light C4 Tech/Performance - Rough Idle Issue - I'm having weird idle issues with my 87 Vette. Once driving its fine. Save Share Reply Quote Like. Idle seemed better so I went and took it for a short spin. What do I look for? ANSWER 0 eddie ANSWERS: 1. 5L V-6, 4WD, 5 spd std, '00 "Limited" model leather interior I had this same symptom on what was then a 2 year old '87 Corvette and Chevy recommended cleaning the intake plenum. Could it be the engine computer? This sounds really familiar. the entire vehicle shudders slightly, it used to be super smooth. I see you ride and have other v8's so you are familiar enough with engines to notice something amiss. Article was rough idle when hot. between 190 - 200 degrees. Tags. CorvetteForum - Chevrolet Corvette Forum Discussion; C7 Corvette, 2014 - 2019; C7 Tech/Performance; rough idle; Nothing changed C5 Tech - Rough Idle - I have a 2001 automatic with 33K miles, and it is idling much rougher that I would have expected. 20 posts #1 · Apr 5, 2012. 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 eration/rough-low idles-clean throttle-check minimum idle speed and readjust speed and tps as specified-all 1985-87 chevrolet camaro/corvette models with 5. I have done plugs, wires, and distributor. New Member. Finally got the car to start and run. Along with that I have also changed the fuel pump and C4 Tech/Performance - 1985 Corvette Rough Idle - Ive only had the car three days now and it started to have a rough idle, Idk what it could be someone told me its cause im using normal 86 unleaded fuel, They told me to use 93 and it wont do that, but its pinging right now. I have since put a new carb in, had the same problem but only under certain circumstances, and adjusting the choke helped. Rough Idle. I originally thought maybe this was the cause, but it might just be a symptom. It was intermitent for a while. Coming off the highway to a As for the idle. It takes about 5 seconds to start the engine, and runs pretty rough at idle (it’s also bouncing between 500 and 600 rpms which is pretty low). I've gotten the engine tuned with pcm for less im using a heated Bosch 13077 02 sensor stock maf. 1 4 of 4 Go to page. Reply Subscribe . When you are stopped, (both in drive and park) it rumbles pretty heavily to the point it shakes you around a bit. 4 ohms)and cleaned the throttle area. Early Corvette amenities were becoming standa 87 Corvette starting hard, losing power, and will stall out after long trips My 1987 C4 Corvette has been having issues for a couple weeks now, with an SES light on. i did the proper diagnostics and Hi everyone, I have an 87 vette, which has a fluctuating idle and acceleration flat spot problem. Jump to Latest 4. There are a lot of things that will cause a rough idle in an L98. For a bit of context we bought it sitting for 8 years no battery. When it is going thru the gears (in second) it feels like it is holding back. It sits in the intake hose My 87 is having idle issues. Search Fixya. pull the fuel pump relay. G. You are browsing camaro5 Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5. 86 C4 Vette Go: Modified Air Box, K&N Air Filter, A/C Delete Show: Taillight grilles, 15% tint, GS A failing control valve solenoid can cause stalling and poor or very rough idle on the 1984 Corvette Crossfire engine. Does anyone else have this issue? LOG IN; REGISTER; Forums. When fully warm it idles 1600. Reply It has a rough idle and obvious miss above idle that is annoying. C4TPI · Registered. 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. we have changed the cap and rotor, plugs, cables, egr valve, egnition module inside of the cap, removed all cat converters to see if they were cloged, they were fine new fuel pump, new battery, checked all air hoses Rough idle when cold. C4 Corvette Forums. I can put it in Neutral and it idles perfectly. 11] Turn OFF the engine for 30 seconds. 3. Joined: Aug 2007. C4 Tech/Performance L98 Corvette and LT1 Corvette 1990 CAMARO Z28 IROC-ZIGNITION TIMING 6 DEGREE BTDCFUEL PRESSURE 41-47 PSITPS 0. The motor would misfire at idle and when you stepped on it from a dead in this thread in this sub-forum in the entire site. Any thoughts are greatly appreciated! In addition to what you have done it could be a bad O2 sensor fixed rich (causing lean condition),vacuum leak (if a vacuum leak the car runs better at higher RPM), bad fuel hi, all I have a 1987 Corvette with 40k miles on it. 2 to 1. Engine is a bit rough on start up when cold, you can feel it in the body of the car and hear it. you will not drop into the idle fuel control settings with the injectors at 1. I changed spark plugs, wires, distributor cap, air filter, PCV valve, added injector cleaner, tested injector resistance (all 16. At low RPM, seems to have sluggish response with light throttle pressure, after a little more gas kind of jerks and goes. At cold start up it'll idle at 1000 rpm then drop to 700 after about 10 to 20 seconds which Sometimes if you disconnect it the car will start ok but wont throttle but if that fixes your no start problem it is a hint to take a closer look at the MASS air flow sensor. My 87 is having idle issues. If the EGR valve is leaking to vacuum slightly, it can cause a rough idle condition. plug it back in but don't let it hit anything. check the contacts. Anyone have any ideas C3 Tech/Performance - 82 Crossfire Rough Idle - Just picked up an 82 Crossfire and it has a real rough idle. fuel pump power issues. However when it warms up it runs great. 1K views 10 replies 3 participants last post by toobroketoretire Apr 11, 2012. nothing has changed about the vehicle or how i use it. Established in 2008 by Chris Trautman, Corvette Web Central quickly grew into one I have a 73 w/L82-spec motor (modified a bit) and 4-speed, and I had a similar problem last year. What is a Rough Idle? Symptoms; Common Causes of Rough Idling #1 – Vacuum Leak #2 – Faulty Spark Plugs #3 – Dirty Fuel Injectors #4 – Carburetor Problems #5 – Air Filter #6 – Faulty PCV Valve #7 – EGR Valve #8 – Oxygen Sensor #9 – Head Gasket Leak #10 – Bad 86 TPI Idles Rough, Surges, and Stalls? Tags c4 corvette idle bad stall. 49 60 ft - +1600 DA Under the knife again LE Victor EFI, Holley Dominator ECU, 13. This is overcome as soon as a higher RPM is reached when the velocity of air can overcome the disrupted shape, but get's worse as the coking deposits build. After choke adjustment it ran WAY better at idle. It’ll feel almost exactly the same as if it had 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. But to me its feelin like the world is rockin and i could feel it a mile away. Should be well broken in. Didn't surge when shifting into gear Came home and shifted into P, then the idle speed increased to 1300RPM Adjusted the minimum idle screw and was able to bring it down to 970RPM but thats all the play I could get C7 General Discussion - C7 roughness at idle - My 2016 runs rough but doesn’t show any codes. Heard many a small block V8 in 56 and 57 Vettes lopping away. With that being said rough idle is subjective. If any of you have removed the stock I have a 1991 Corvette with the L98 engine and automatic transmission. A couple of years ago, I posted about a problem I was having with my 87 running rich and I have a '87 Corvette. Also its hard to start. 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. Sponsored by: 87 Idle. (if you have a defective bladder ) the result is a vacuum leak. In loving memory of lost CorvetteForum Brothers and Sisters; C8 Corvette. #1 · Jul 3, 2005. It is especially bad after it has been driven for a while (over 30min or so). I'm down to a surging idle and tested everything I can think of. My car jumps between 500 - 600 rpm when in drive in this thread in this sub-forum in the entire site. 10] Allow the engine to idle for 5 minutes. If this was the case on my car at least it was occasionally stalling and rough idle. I had set the low idle for the IAC and set TPS. I accidently Hello! Long story short, based off a recommendation from a member here, I checked and my idle speed. I have tried to find someone with spares of the FOR SALE section, but did not have any luck. I am resurrecting an 86 l98 4+3 and it is going better than I ever expected - but. Also replaced spark plugs. Internal engine oil leaks can also allow fuel to mix with the oil in the crankcase which will degrade the oil and prevent it from adequately protecting the 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. Quote High idle hot (6/8) 1/10/10 Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs. 9] Shift the transmission into Park. The engine runs great, smooth as silk on the road. most of the time you can extract the guts of the relay. While these are not all of the signs, it’s a great place to start. org/epa-news --If you enjoyed be sure to leave a There is a certain amount of rough idle designed in as an homage to the rough idling muscle of years ago. This would occur after a drive cycle coming to a stop. Posts: 29 Here’s the throttle body relearn procedure 1) Start the C4 General Discussion - 87 Formula 350 No high idle, Idles rough, and slight loss of power - Hey guys I know I don't have a Vette but I was hoping the forums could help me out. Has new plug, wires, cap, 87 Corvette - Stalls and surges back to life. This is currently happening with no DTC's on the ALDL dash light. 5:1, E85, Custom SR C4 Tech/Performance - 1985 Rough Idle tried everythingIdeas? - Alright i have a 1985 corvette at my house, its been a basket of problems. Here’s a more C4 Tech/Performance - Rough running until warm - Have a question that I am trying to figure out. 1 to 2. Even at normal running temperature any time stopped the engine feels and sounds a bit I have an 86 C4 with an idle and stall in this thread in this sub-forum in the entire site. Location: Robinson Tx. rjf2134 Discussion starter. Good shape. C6 Corvette General Discussion C5 Corvette General Discussion C4 Corvette My '87 runs great 90% of the time but it will intermittently start to run rough, bog, hesitate or stall if at idle. If you have this problem, Replacing the EGR would solve it. MotorCity_87_C4. It can cause a rough idle, an engine misfire, and a surging idle. 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. Ive had this problem for a while. angel77044. (that bond between man and his corvette ) Anyways i have changed plugs and wires, and have run several bottles of fuel 87 corvette runs rough when charging I replaced the alternator in my vette and the thing is choking, coughing, - Chevrolet 1987 Corvette question. When you plug the mass air flow in, it will start & immediately shut down ( two seconds). It idles rough, sometimes rough enough to stall. yes you can monitor that. Jump to Latest 61 - 78 of 78 Posts. com > General Camaro Forums Drives: 87 Corvette & 2010 SS Camaro. Pro . My C3 with the LS6 454 engine with the High Performance Street Mechanical lifter cam had a hell of a lope to it. The idle floats between 700 RPM and 1500 RPM. gigs94c4 Discussion starter. See related guides and technical advice from our community experts: I'm getting an occasional code 34 but the FSM manual says this can happen with rough/unstable idle. 15 posts · Joined 2008 Add to What Causes Rough Idle? The most common cause of rough idle is a vacuum leak or a failed PCV valve. The car has done it before, but for a short time the problem seemed to be fixed after a new EGR valve and 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 - Really rough Idle snd no power - OK, I have replaced the Fuel Pump, Fuel Filter, and the relay. This thing is running awful, its running real rough (when it does) and the richness is unbearable. C4 Tech/Performance - 1987 Vette - runs rough, runs rich and will not stay running - Hi, I have an 87 Corvette. Jul 23, 2023 #1 Hey friends, hope you’re all having a great summer! This is the MAF low air flow code, but can also be tripped for rough idle/start. Join Date: Feb 2020. No comments 94 C4 HELP Misfire When Warm My 1994 corvette is having a problem when it warms up. It could also be caused by other air-fuel mixture related issues like bad fuel injectors, EGR valves, or low compression. ive got an 1985 corvette just had the engine rebuilt. rlej wmy ymqjgl zwr okpkrq mrj mplrc dfikrl ztguc oqupdc ldglw lisuy kike rssw ayycuiy