85 corvette wont idle. Kerbeck Corvette also offers financing and leasing on its.

85 corvette wont idle I replaced the IAC once and it acted just like this. How to adjust base idle. Early on in the work on this car I discovered that the gasket in the air horn of the TB unit was NFG. Little project for me and my dad Long story short, I have a 1985 C4 that ran and drove really well, up until 2 months ago where I did a close to WOT pull and after letting off, the car stumbled and died. These steps apply specifically to the 1985 model year, and it general to other years. I have a 1987 stock convertible with manual (4+3) transmission. symptoms- the car starts, runs for 5 seconds and Jun 20, 2014 · Engine won't idle below 1000rpm. When i am in car and applying a little pedal it idles fine. 99 or better) SOLD Priddis Greens, Ab. Any suggestions Aug 5, 2014 · The exceptions are the 1984 Corvette that used a speed density system--a sort of predictive method of measurement---and the 1990 through 1993 C4 models which were also speed density based. Jun 9, 2016 · Hey guys this is a continuation of another post but with a new issue I have an early sbc that I transplanted into a late model truck and I cannot get it to idle below 1300rpm timing is set at 35degs locked out its just a mild rebuild slightly bigger cam than stock but still has normal street manners a little bigger lift but has a large Lsa 114 and has 64 cc aluminum cyl heads but nothing Mar 7, 2012 · There was a big debate over the '85 Fuel Pump versus the '84 fuel pump and I really couldn't decide either way if one had a definite advantage. Whether you’re looking for a classic car to show off or a reliable daily driver, If you’re a car enthusiast searching for the perfect Corvette for sale in your area, you’re in luck. I disconnect it while running and it goes away. None of the cables are tight. Re-connect the electrical connector onto the IAC. If you’re considerin The 2002 Corvette is a classic, iconic car that has been admired by car enthusiasts for decades. May 17, 2008 · vetnutjim,,,thanks for this info,,to answer your question,,yes i did have work done,,,my car was running sluggish,,(1990 auto) took it to my neighborhood mechanic,,had a tune up & he replaced 3 bad injectors ( i probably should of changed out the other 5),,car ran like a champ,,,a day later. Carburetors didn't adjust automatically. General Idle speed and off-idle throttle response Feb 5, 2003 · C4 Tech/Performance - Wont hold idle - Anyone have any ideas on why my vette wont hold idle. sema. Nov 14, 2006 · C4 Tech/Performance - '84 cfi idle problems, - i know this has been asked a million times. We also support Corvette events, swap meets and local Corvette club shows all over the world. 75v Idle 430-720 155 degrees (during bad idle my issue) I replaced the voltage regulatorHis last one was bad (flickering lights) I checked att the main grounds and they are good. 9v Idle 430-720 155 degrees (during bad idle my issue) 14. With its sleek design and powerful engine, it’s no wonder why so many people are looking for this cla Python IDLE is an integrated development environment (IDE) that comes bundled with the Python programming language. With a rich history and an unparalleled selection of Corvette models, this dealership is the ultimate For decades, the Chevrolet Corvette has stood as an iconic symbol of American automotive excellence. Fine Tuning Connect a vacuum gauge to true manifold vacuum. Canada Mar 1, 2010 · clean the IAC. 1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe. 14. 5:1 flat top pistons stock crank and rods heads ground to except miloden 2. Negotiating the price of a car can be intimidating, but with some Are you in the market for a new television? If you’re looking for a larger-than-life viewing experience, an 85-inch TV is the way to go. First a brief history,,,, I drove the car to Columbus (55mile one way) 3 days a couple of weeks ago with no problems. you can take a propane bottle (don't light) turn on slowly and run it over the intake, vac lines ,carb base ect. I had it towed to the dealer and they Aug 28, 2005 · C4 Tech/Performance - Idle Problems 85 Corvette - OK Guys. And when it comes to finding great deals on The 1962 Corvette is one of the most iconic classic cars of all time, and it’s no surprise that many people are looking to buy one. It runs decently above 35mph, but at idle (after it warms up) it seems to idle around 460-700, moving in between those erratically and stumbles occasionally. Sep 19, 2008 · turn on ignition- dont crank, wait 30 sec. 2M posts 121K members Since 2003 A forum community dedicated to Jun 6, 2019 · C4 Tech/Performance - '85 won't run or idle, help - Quick description of car: 1985 automatic, 120,000 miles, stock. However, finding t Welcome fellow Corvette enthusiasts. Also sometimes an IAC will go bad, or get stuck, because of another fuel related issue such as leaky injectors or bad FPR and it causes it to run rich and then the IAC will get all carbon and gunked up. The car throws no trouble codes. It drove fine after it was jumped but we planned to update May 17, 2021 · The following list of common issues is intended for individual reference only, and may not reflect the specific issues of every 1985 Corvette. One popular choice is buying from a private owner. An engine idle speed is set by the manufacturing in order to ensure the When a car sputters as it idles, this means the car is either not getting enough power or fuel. I can advance the timing to make Feb 3, 2015 · "Bella" - 2002 Z06 - Carrying on family tradition of Corvette ownership. Now it starts, but won't stay running. Jump to Latest Corvette Forum : DigitalCorvettes. That being said, you replaced the fuel relay and fuel filter, but you've failed to address the pump just yet. Jul 23, 2006 · C4 Tech/Performance - 85 wont idle when cold - When you first start it coolant is cold it wont stay running, you can raise the idle by pushing down the gas pedal a small amount to keep it running. this is bowl vent make sure its clear then poor some gas in about a cup and fill the bowl see if it will idle and run with full bowl. An idle air valve is important for maintaining correct idl Corvette Central is a leading provider of parts and accessories for the iconic Chevrolet Corvette. It was good when newly started and when it went into closed loop it started to hunt and when coming from highway and in to town It surged at the traffic lights. With over 30 years of experience in the industry, they are one of the most truste If a car shakes when it is idling, the cause is usually something happening with the engine, such as needing new spark plugs. 1966 427 Corvette SOLD 1973 Camaro IHRA Hot Rod (LS-6 Auto)11. May 1, 2007 · REMEMBER, DRIVE'M LIKE YOU STOLE'M 1988 350 from Trans Am Now 355 cu. - Greetings everyone. 88 K miles, Auto Trans, Intact stock /unmodified L98 engine. Now it won't even try to idle, it dies right down. I had to Aug 30, 2019 · If you own a Chevy Corvette and it's idling rough, you may be feeling frustrated. Luckily, there are many companies t If you’re a Corvette lover, then MacMulkin Corvettes should be on your radar. I have an 85, which I bought a month ago. Trying to get it back on the road but it only starts with my foot on the gas a little. (1989 Bosch MAF installation shown at right). It started up fine when i got it. Go out to start the car and it starts, but runs a little rough. It had a quater of a tank of gas that was in it from the dealer. drives me insane!!!! what is the most likely cause? Jul 16, 2017 · 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 have an 89 automatic that normally runs great. sometimes it will idle low, around 500-600 rpm. Jake Nov 14, 2002 · Hi I have an 85 too. When the throttle is closed at a normal rate, it will idle at 840-900, then punch it, and the idle will return to where I set it at 600-640. My car would not idle, it would just immediately stall out upon cranking. The battery is old and was dead when she went to drive it last month. The Low Coolant Sensor was also just hanging in the engine bay. I was driving my vette yesterday on 6 cylinders, so I know what it feels like! :eek: [Modified by CentralCoaster, 3:34 AM 3/25/2004] May 9, 2011 · Alright, when I first bought it, it had a problem with idle and it stalled a couple times. Idle is 900-950 depending on how you look at the Aug 23, 2017 · C4 Tech/Performance - 1985 Corvette Will not maintain Idle / idling extremely rough. Now it wants to hunt at Idle halfway warmed up. Aug 19, 2021 · C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine 86 won’t idle. The number one cause for high idle is an imbalance in air pressure. . 7 TPI with a 700r4 tranny. Oct 29, 2008 · C4 Tech/Performance - EGR Vacuum Solenoid - I just bought an 85 Corvette about a month ago and up until recently, it has been running great. [Modified by vettenut85, 6:47 AM 7/8/2004] You have to set the base idle by first grounding out your diagnostic connector (ALDL), turn key on but DO NOT start. It has always run great. I pulled codes before and I had O2 open left side and esc Nov 30, 2002 · 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. If doing so makes th Cars idling rough at stops can have many causes, including damaged sparkplugs, improperly installed sparkplugs or damage to the car’s fuel injector, carburetor, vacuum hoses or ign If you’re looking for the best parts to upgrade your Corvette, then look no further than Corvette Central. Idle speed in NEUTRAL or PARK is less significant, and will be higher. Gets progressivly worse quickly and after about 300 yards, dies. Been running great, but now twice in the last two weeks has taken a spell of running so bad that it won't run. Dec 30, 2005 · I got a 85' Corvette, its all stock. Runs fine under power. nuts trying to figure this 85 out, What we have so far is all sensors are doing there thing, We put a prom out of a 88 Z28 in and the surgeing went away but didnt run the best because it wasnt made for my 85 Jun 14, 2013 · C4 General Discussion - No fuel pressure at fuel rail - My 86 corvette wont start, if I turn the key to on and push down on the shrader valve needle on the fuel rail no air comes out. Yesterday I drove about an hour and it sat for a hour or so. I've noticed for a while that it has issues idling after it enters Closed Loop. If I try and set the idle to 550 in drive, it will jump anywhere from about 450 to 700 and the motor will want to die. Many times engines with headers at idle won't enter closed loop when using a stock type 02. One of the main advantages of buying a Corvette from The Local Government Pension Scheme 2014 reports that the Rule of 85 determines how someone’s retirement benefits are decreased if the person decides to retire before the age of 65 When it comes to buying a used Corvette, you want to make sure you’re getting the best deal possible. Im tring to avoid buying a new bat and alternator on a hunch. When a car is stopped at a red light or turned o Are you looking to purchase a classic 1962 Corvette from a private owner? If so, there are several important factors to consider before making your purchase. when it is warm it idles ok until it put it in gear then Idle drops down to Nov 12, 2007 · C4 Tech/Performance - 85 with erratic idle - Car experiences surges as high as 1400 rpm, then will drop down to 500 rpm. 54v, idle set at 600-640 rpm. It provides a convenient interface for writing and executing Pyt If you’re in the market for a Chevrolet Corvette, you probably want to ensure that you get the best deal possible. I only have to apply a little pressure to the gas pedal to maintain and idle. Jan 31, 2006 · C4 Tech/Performance - 87 engine idle problem - I have a problem with my engine idle speed. Oct 20, 2005 · Sounds like my car was awhile ago. Aug 15, 2003 · A bad IAC, especially on a MAF vehicle can cause all kinds of drivability issues. Throttle Position Sensor Dec 22, 2011 · C4 Tech/Performance - 1990 L98 Won't idle when cold - 87k miles, recent major tune up to include wires and coil, Bosch III injectors, CTS, waterpump. I read that it was tied to idle from 84-89 as a failsafe to prevent the car from overheating. It is an awesome ride and I'm enjoying being the owner of a Corvette. The most common cause of a rough idle is misfiring. Finally have my new motor and exhaust installed. My 85 will not idle stable unless it is running at least 850rpm. If that system drops below a minimum pressure, the injectors won't fire. *egr or exhaust gas recirculation valve *clogged fuel 1985 Chevy corvette will not idle down too less than 1200/ I got it to 9000 killed it started it back too high idling. 02-1. If i disconnect my IAC motor,idle increases at 1200 rpm but becomes steadyToday cecking my timing with my Thank you all for tuning in to another video!SIGN THE RPM ACT TO HELP SAVE OUR RACECARS!!-- https://www. Some time ago when the engine warms up and I'm stopped at a traffic light it would seem that the car would stall out but it never did. Reply Subscribe . i'm sure i wont be the last! my '84 has a mind of it's own. Still had a high idle even set to 2 degrees but was low enough to perform a smog. I reattached the IACs and removed the plugs and now she Sep 22, 2008 · C4 Tech/Performance - 1990 Corvette loping idle, runs rough - My 1990 Corvette 6-speed is giving me fits. Mechanic's Assistant: Have you checked the fuel supply? And are all the spark plugs working? Oct 4, 2018 · Corvette Central is a proud sponsor of The National Corvette Museum, NCRS (National Corvette Restorer's Society), NCCC (National Council of Corvette Clubs), Corvette Forum, Digital Corvettes, Corvette Action Center, Z06vette. None of the throttle linkage or cruise control cable is holding or binding it. 54 to Jul 15, 2015 · C4 Tech/Performance - 85 Idle Problem - My 85 Corvette that has an idle problem. 00 @121 (Chased a 10. My 87 runs fine, but it simply wont idle. Most any parts store will stock an '84 computer. I have a otc scanner, multimeter, and injector pulse tool, Jan 18, 2006 · C4 Tech/Performance - 85new motor, won't idle - I just got done putting a new engine in my 85 and along with the long list of other problems, the car won't idle. Later model years do not have adjustable TPS’s. May 29, 2019 · C4 Tech/Performance - '85 won't run or idle, help - Quick description of car: 1985 automatic, 120,000 miles, stock. Seems to be a Apr 6, 2012 · Adams' Apple Standard Member Moderator Send Private Message Duncanville, TX - USA Vette(s): 1985 Coupe-L98/Auto,Bright Red/Carmine. Located in Nashua, New Hampshire, MacMulkin is one of the oldest and most respected Corvette de If you’re a car enthusiast looking to own a Corvette but don’t want to break the bank, considering a pre-owned Corvette is a wise choice. if anyone will be May 19, 2020 · on the 85, there was a tsb to set the idle higher from the originally low 450 up to 550. Finding the right used Corvette in your area Python is a popular programming language known for its simplicity and versatility. The most common symptoms are surging/hunting idle, or an idle that’s way out of spec (400rpm, or 1500rpm), stalling when coming to a stop, causing the ECM to have an erratic integrator value, accompanied with a moderately swinging A/F ratio. - I have a 85 corvette that runs rich and wont idle, dies when i let off the gas. Here is my old timer answer: vacuum leak. Jan 22, 2016 · C3 Tech/Performance - 1982 C3 Crossfire very high idle 2000 rpm (help) - This morning I attempted to lower the minimum idle as she was idling a little high. Apr 6, 2012 · I am able to get it started now, but it only runs for 3 or 4 seconds, then stops. I drained the crankcase and put in fresh oil and filter. When I first start it up, it runs fine, idles properly. 85 vette runs great till I stop,acts rough Apr 26, 2020 · C4 General Discussion - Barely idles/won't stay running after battery install (or coincidence) - My girlfriend has an '89 Corvette. Gaming doesn If you’re in the market for a C7 Corvette, you know that finding the perfect one can be quite a challenge. Timing is fine, new injectors, too. org/epa-news --If you enjoyed be sure to leave a Apr 22, 2009 · The corvette model you have is actually designed to run at 500 rpm while at idle, warmed up, and in gear. com, there are several reasons vehicles idle low. Plus it doesn't run smootlhy and is kind of reluctant to rev in the 3500 rpm zone. Jul 7, 2004 · base idle speed for a 85 was 450rpm,later gm reccomended base idle speed reset to 550rpm. Dec 10, 2011 · Last year I received an 88 corvette in lieu of profit sharing from my former business partner. Kerbeck Corvette also offers financing and leasing on its The 2002 Corvette is a classic American sports car that has been around for decades. When you bring the rpm's up it will backfire through the intake. May 25, 2017 · C4 Tech/Performance - 84 Crossfire Idle/IAC help - Hoping you guys can help me out. After I drive it a few miles, it either won't start or when it does start, it has a loping idle and runs like crap. It is widely used in various industries, including web development, data analysis, and artificial Are you a car enthusiast in Texas, dreaming of owning a classic Corvette? Buying a used Corvette can be an exciting and cost-effective way to fulfill your dream. MacMulkin Chevrolet is one of the leading used Corvette dealerships in the cou When it comes to finding quality parts for your Corvette, you want to make sure you are getting the best parts available. Before the injectors were replaced, it would not start, and the crankcase filled with gas. I connect it the bad idle comes back. I removed the unit in February to install a new high pressure pump seal. Additionally, some cars have a fan clutch tha The primary theme of “Tears, Idle Tears” by Elizabeth Bowen is a boy’s coming of age through acceptance of emotions. When the fourth generation Corvette was introduced in 1984, many innovative build techniques were implemented. The first thing you sh If you’re looking for the best deals on Keen Corvette parts, you’ve come to the right place. Have you verfied the setup of the TPS and IAC? If the intake doesn't see a vacuum leak at idle (or clutch in, no gas) it'll run like crap. Pre-owned Corvettes offer excellent value If you’re a car enthusiast looking for a powerful and stylish sports car, the C7 Corvette is undoubtedly on your radar. Mar 19, 2011 · C4 Tech/Performance - Wont Idle - 1987 Corvette with 147k Hey guys, I have been working on replacing my intake manifold gasket for the last few months. if it is running rich it could be the computer is sending too much fuel to compensate. I've tried adjusting the TPS sensor, Dec 19, 2005 · C4 Tech/Performance - 84 starts but wont run after 5 seconds - I have 1984 Vette and after sitting at home not running for about 4 weeks it did not want to run. when it gets to 175 degrees it will stay running but it is only at about 650 in drive, setting no codes. I grounded that wire and idle improved, but just slightly. It ended up being my EGR valve was getting stuck open and flooding the engine with gas. I located the idle issue it was the esc module. Had to crank it many times to get it going and the next time it decided to be nice and break down at home. With its sleek design, powerful engine, and legendary reputation, the Corvette In recent years, the demand for high-resolution televisions has skyrocketed, with consumers seeking immersive and lifelike visual experiences in their homes. I've replaced plugs, wires, battery, alternator, fuel pump, fuel filter, fuel pump relay and "the chip" Oct 29, 2004 · C4 Tech/Performance - Engine backfires/wont idle - Now that i've figured out why this car wont start 85' (bad ignition modual) the car backfires wile i have too govern the gas to keep it running. Sometimes when idle drops down it goes to 400 rpm and engine almost stallI've cecked for vacuum leaks and intake manifold gasket leaks. Fuel pressure is 50psi at idle (stock pump, new sock and vibe dampner). When it's cold, it starts, runs, and idles great. Mar 15, 2014 · Im running out of ideas. The Problem: When I push in on the clutch while rolling, the engine idle speed tends to go up above 1000 rpm (generally to around 1300-1400 rpm) and it stays there Dec 4, 2007 · So starting the car and letting it idle for short periods will simply further deplete the battery since it won't have charged fast enough or long enough to even make up the charge you used to start the engine. I used to have an 85 Corvette that had a similar problem but I can't remember what I did to solve it. I have owned a 1965 FI coupe for 41 years, and have rebuilt the unit numerous times over the years. It’s an iconic vehicle that has been sought after by many car enthusiasts. I have a 1984 Corvette with Crossfire, about 75k miles on it. in. The 85+ fuel pumps do WONDERS over the stock 82 fuel pump. My 85 idles normal (550-600 Drive, 650-700 Park), then after driving 15-20 miles it will run at 1900 RPM in park. What an Engine Needs to Nov 19, 2010 · C4 Tech/Performance - 1985 idle issues found problem wont fix????? - I have a stumbling bumbling 85 Im working on for a friend. Jun 22, 2011 · C4 Tech/Performance - 85 corvette running rich, black smoke and wont idle. I had to head gaskets recently changed and I truly believe that I have no vacuum leaks. With so many different sources for Corvette parts, it can If you’re in the market for a used Corvette in the Lone Star State, you’re in luck. Both times this has happened after running great for several hours. Texas is known for its love of cars, and there are plenty of options available when it comes to Python is a popular programming language known for its simplicity and versatility. With its sleek design, impressive performance, and affordabl Are you looking to upgrade your vehicle? If you own a Corvette, then you know that it’s a classic car that requires special parts and attention. Usually misfires occur when there is no spark, the air/fuel mixture is out of balance or the engine is According to About. Sounds like you might just be down a cylinder. It had other idle issues besides this one (would not stay running when cold) but I think I tracked most of that down Jan 12, 2009 · on the carb there should be a hole right above bowls towards front. o A clogged fuel filter won't necessarily cause a serious drop in pressure, but it will cause a reduction in fuel volume. Blades in TB are NOT hanging. 10v Cold Start Idle 1k Alt. L98 5. Jul 10, 2002 · C4 Tech/Performance - 89 won't hold idle - Hello everyone! I need some help. When i went to get ready to move the car around in Customer: My 1985 Corvette will not idle , when I crank up , I have to hold the accelerator . 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. Shortly after increasing the idle, I found a problem with the vacuum hoses Mar 14, 2017 · C4 Tech/Performance - Trying to pass emissions testing at idle with L98 - I bought a 1985 coupe last summer. It was idling fine after it warmed up. The PO installed a new Edelbrock 650 cfm 4 barrel, and the car has Pertronix. "Alexa" - 1985 Z51 - In memory of the last Corvette Dad owned. 60 valves 1985 Chevy corvette will not idle down too less than 1200/ I got it to 9000 killed it started it back too high idling. 9. The new engine is a 409 with a burnett made super victor intake setup, factory ignition and factory throttle body. Oct 29, 2012 · C3 Tech/Performance - 1982 corvette won't stay running - Hi, i have a 1982 corvette with 4,700 miles on it. 1987 corvette hard to start unless you floor it runs rough wont idle it dies and the passengerside exhaust is hotter than driverside acts like it is running on 3or4 cylinders ive replaced o2 sensor and May 8, 2007 · You could try raising the RPMs to about 2000 or so and while holding it there, monitor the Loop status. Any Apr 23, 2017 · C4 Tech/Performance - Won't idle down - Yesterday 09:06 PM14Kevman I have a 85 tune port with 27k for miles I have a intermittent problem the car won't idle down below 15-1600 when this happens and it's getting to happen more often the 4+3 overdrive kicks on and off on its own were should I start?? Jun 19, 2011 · I've had to replace my computer 4 times in 23 years as my computer failed to power the IAC motors at times. Turn idle mixture screws (both evenly clockwise) until the engine stumbles (lean). Fuel Problems. Idle speed should be governed by the ECM at approximately 600-650 rpm in "DRIVE" (for unmodified cars). I drove it 35 miles Apr 4, 2009 · These failures can easily cause a rough idle and loss of performance, and they're common enough to warrant checking before anything else. 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. com and many more. An engine that is idling too high may be caused by a faulty idle air control motor valve that has completely fai There are a number of reasons why an engine might misfire while it is idling. Since winter is over, I am attempting to get the car licensed for 2017 in an urban area that requires emissions testing. Jun 19, 2020 · C4 Tech/Performance - 1985 Corvette setting the idle SOLVED - Hello everybody, First I want to thank everyone that made an effort to help me. runs and drives fine but when coming to a stop it wont idle, it will drop to say 200 which is just not enough to stay running, the computer will try catch up but its to late Mar 22, 2004 · Sounds like it won't idle. So its a real pain at stoplights to keep it running until its up to 190 degrees. i set it at factory specs but when it goes in closed loop RPMs go up and down from 600 to 1000 RPMs. 85 vette runs great till I stop,acts rough Dec 16, 2010 · 15. if yes then fuel pump is bad or carb is problem if not then. Other themes include the weight of expectations and the differe Idle air control valves can be tested for resistance, mechanical function and valve triggering with a digital multimeter. Sep 8, 2023 · 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. While the intent of this page is to identify the common issues pertaining to the 1985 Corvette, it is not an all-inclusive list and should be used for reference only. If you’re in the market for a 1982 Corvette ECM (Engine Control Module), you’re likely aware of the importance of this component to your vehicl If you’re in the market for a used Corvette, you’re likely looking for a high-performance sports car that offers both style and power. There is a lot of slack in the accelerator cable . The car will run fine if it is running Mar 13, 2011 · hi guys ,my 85' C4 has an orrible wobbling idle . Apr 21, 2010 · This is from the 1994 GM Factory Serive Manual, Book 2: IDLE AIR CONTROL (IAC) VALVE Remove or Disconnect 1. And when it comes to classic cars, few can rival the timeless appeal of a 196 When it comes to buying a 2002 Corvette, you want to make sure you get the most out of your money. Jul 5, 2014 · C4 Tech/Performance - 85 Wont Run Past 3000 RPM Without Backfiring - I have an 85 with the L98. "Desiree" - 1977 - Wife's car, with an attitude problem. Mechanic's Assistant: Are you fixing your Corvette I have a relatively stock (stock L98 engine with automatic transmission) 1985 Corvette. Had also the surging and hunting at idle. Nov 3, 2011 · 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. It will idle at this even if the temp isnt fully at running temp, just past the initial warmup phaze, sometimes called open loop. The most striking feat MacMulkin Chevrolet has been a leader in the used Corvette market for over 50 years. All original. 96 LT1 70K miles. Just replaced the EGR Temp Sensor, EGR gasket,Intake Air sensor, MAF Sensor, New Plenum gaskets, TB gasket. Have Customer: My 1985 Corvette will not idle , when I crank up , I have to hold the accelerator . Has Longtubes, highflow cats, and flowmasters. With a large selection of used Corvettes from all generations, MacMulkin has the perfect c Idle speeds vary from car to car, but for a passenger car, typical idle speeds are between 500 and 900 rpm. When the rev's are down it would backfire through the Apr 1, 2003 · C4 Tech/Performance - 85 wont idle when cold, have to hold gas, but will idle when its warmed up??? - I cant figure whats causing my uncles 85 vette to not idle till its completely warmed up. Once the idle rpm is set, turn off the engine. But just yesterday I got the door back togather and got to drive again. I checked timing it was out of spec so I set it to 6degrees as to what the vicky label. It is finally warm and I got it all put back together, however, I now have new issues. This happens whether or not I try to hold the pedal down, or just don't touch it. I'm stumped now. My engine acted just like yours as my idle would often fluctuate and then my engine would die. How to Set Minimum Idle on your C4 How to Adjust your Early C4 TPS and Idle Speed -- 1 of 1 Date Published: 2001-10-01 Submitter's Name: Lars Grimsrud Email Address: [email protected] How to Adjust your Early C4 TPS and Idle Speed by Lars Grimsrud SVE Jun 18, 2017 · C4 Tech/Performance - SOLVED! Running rich - A couple of years ago, I posted about a problem I was having with my 87 running rich and occasionally setting a Code 45 (Rich Exhaust), plus the MPG was way off (30-40%) between what the dash showed and what I calculated: Jan 15, 2022 · C4 General Discussion - 1985 Very High Idle Speed (1900 RPM) After Driving 15-20 Miles - I am having a high idle issue on my 85 Z51, 4A. It to had a fast idle problem. So i have to hold the gas or it will die. It seemed to be happening only at idle. These steps apply specifically to the 1985 model year, and in general to other years. But in Sep 20, 2007 · New BBK 52mm throttle body installed on my 85, tps sensor set at . Re-connect the connector onto the IAC. Ultimately, it is this reduction in volume that causes the engine to Jul 6, 2013 · C4 Tech/Performance - 89 hard starting, wont REV, rough idle, very rich - This 89 project has been like this since I got it last week. It was new to me last fall and has 37,000mi. Adjust idle speed screw to idle speed RPM per engine specifications. It hasn't been driven much since the end of last Summer. Apr 21, 2010 · correct adjustment of the Minimum Idle Speed and for adjustment of the Throttle Position Switch (TPS) on the early C4 Corvette TPI systems. Connect all hoses. i have reset mine to 600-700 as vader has said. Jan 10, 2013 · Fit a new fuel filter and do a base idle setup, check the throttle position sensor (0. ECM as well . Nov 22, 2015 · i just purchased my first corvette and am having trouble getting it running, its an l98 with a superram intake and a 58mm throttle body, and a cam(not sure on specs of cam), full exhaust, previous owner said it sat for 13 years but they had it running 2 years ago it has a new fuel pump and sending unit, i installed a new fuel pump relay and pigtail connector for relay because the connector for May 31, 2021 · All the above things are possible answers. I replaced the cap and rotor to no avail. The rough idle may be caused by one or more many things. Well, I decided to go through the Nov 9, 2014 · Backfiring issue - 85 TPI. Have replaced O2 sensor, IAC, TPS, coolant temp sensor and had TB rebuilt. Start engine. I disconnected the IACs and plugged the IAC air inlets and attempt to lower the minimum idle. With the right knowledge and resources, you can find the parts you need at a fraction o The Chevrolet Corvette is an iconic American car that has been around since 1953. To test the problem, the driver presses down on the gas peddle. 5 volts dc or at least 3. About two weeks ago, the car wouldn't start so i did the ALDL thing with a paper clip, and it read 33 (Mass Airflow Sensor voltage high) so i replaced it. One night it left me stranded and wouldn't start. Except, The car now has a hard time holding an idle and usually dies when cold. I have two different proms ive tried and they make no difference. If the idle screw has been adjusted, without the correct base idle setup that can affect starting and idle. From its sleek design to its powerful performance, each generation brings somet If you’re a Corvette enthusiast looking for an amazing deal, bank owned Corvettes can be a treasure trove of opportunities. With your stumbling + rough idle, I would look into a new fuel pump. It died on me in a parking lot, I towed it home, and disconnected the battery. then 20 minutes later the idle is around 1300-1400 rpm in neutral. Electrical connector from IAC valve. When I parked it, it was running great. No luck. I have not touched the car for about 3 months. These vehicles often come at significantly reduced price The new Corvette C8 has taken the automotive world by storm, offering unprecedented performance and styling. Apr 2, 2007 · Need some advise here. Oct 14, 2008 · C-4 having same issue I cleaned my MAP sensor and throttle body after runing the car about 45 min on hwy and coming to a stop at a light the vehicle will idle high about 2k and then within 5 to 7 secs go down then back up again the car seems to run fine on hwy but at 50-70 mph I step all the way on the gas the car will hesitate and not give full power Sep 9, 2005 · C4 Tech/Performance - 85 Still Surging - Yes its me with the same problem surgeing, so far i have drove 2 mech. With so many options available, it’s important to have a checklist to ens If you’re in the market for a Corvette, buying from a private owner can be an excellent way to find the car of your dreams. Mechanic's Assistant: Have you checked the fuel supply? And are all the spark plugs working? Customer: Fuel supply is good , spark plugs good . Dec 7, 2021 · C4 Tech/Performance - C4 won't idle - I've had my 1985 C4 Corvette for a little less than a year now and I've honestly had some issues with it here and there but I got those things fixed up and it was running well again but now, when I go to start up my car it won't idle at all. I have Oct 2, 2016 · C3 Tech/Performance - 78 corvette won't idle - Hi I bought a 78 and it won't idle. In 1994, Corvette went back to the MAF based system but used the speed density approach as a back up. Whether you are an aspiring programmer or a seasoned developer, having the right tools is crucial If you’re a classic car enthusiast, there’s nothing quite like the thrill of owning a vintage vehicle. When I let up on peddle all the way it stalls. Gone but never forgotten. I have done nothing to the engine except change to a ported and polished intake manifold with the smoothed out plenum and now I cannot rev past 3000 without the engine backfiring/misfiring. Aug 4, 2019 · 1986 Corvette won’t idle but starts with my foot on the gas Hey guys, I just got this car from my step dad and it’s sat for many years in a garage with only 34,000 miles on it. Stops immediately. Those problems won't go away because of the lowered idle, and in fact he's maybe experiencing other problems now because he doesn't have a normal idle. Idle speed is now once again governed by the ECM, but your idle should be smooth and steady, approximately 600 rpm in Drive (for unmodified cars). 5 volts at wide open throttle. unplug IAC, THEN unplug spark advance connector (brown and black I think stripped wire by windshield wiper motor), start car, set idle torx screw on throttle body to idle speed of 450 rpm, yes 450 rpm - may die a time or two but shouldnt, THEN take either an ohm meter or tech1 and loosen TPS sensor - slide up either director to get a reading of . Oct 10, 2005 · If equipped, disconnect the solenoid wire, set the carburetor idle screw to obtain 450 rpm, and reconnect the solenoid. Feb 16, 2019 · I have replaced many parts including the mass air flow sensor and fuel pump idle air control throttle position sensor. And when the computer's IAC drivers go bad it won't set any code. And I also happened to solve the barbie-vette's high idle issue. 35v-14. It got to the point where it would eventually shut off at idle. Common reasons include vacuum leaks, carburetor problems, ignition issues, damaged power circuits and dirty fue Are you in the market for a used Corvette? If so, MacMulkin Chevrolet is the place to go. If you can't drive it, remove the battery to a warm location and keep it on a charger. IAC Oct 1, 2007 · Well Elcooke! Since I so happen to have a 85 Corvette with a TPI, HEI dist. Early Corvette amenities were becoming standa Apr 17, 2012 · C1 & C2 Corvettes - 65 Fuelie won't idle - [FONT= Arial Black ][/FONT Need Fuelie help. With over 30 years of experience in the automotive industry, they are the A car can overheat while idling if there is not enough coolant in the radiator or there is a malfunctioning fan, radiator or fan belt. com Corvette Forums. I have a otc scanner, multimeter, and injector pulse tool, Dec 11, 2017 · C4 Tech/Performance - 85 corvette running rich, black smoke and wont idle. Since it had been sitting for a while (years) I did a major disassembly of the top part of the engine to clean some minor leaks caused by the gaskets. To keep it running, I would have to keep it in the 2000 rpm range or more. if there is a vac leak Apr 6, 2007 · C4 General Discussion - 90-L98 Rough Idle, car won't stay running - It looks like I?m facing my first real challenging problem with my 90 L98, 6 speed (75k miles), no mods. About a week later, I connected the battery and it fired, but only for a couple of minutes at idle. Click here for more info about our cars and autocrossing and other Corvette stuff. With a big enough leak the computers can't overcome the lean condition but it's close enough so that it won't set a May 22, 2008 · The loud thunk he hears when shifting into reverse when the idle is over 600 is caused by problems behind the engine. Oct 9, 2004 · Once the idle RPM is set, place the transmission in PARK and turn off the engine. Apr 11, 2005 · C4 Tech/Performance - 85 won't idle - I know this has probibly been answered before somewhere on here but I am at my wits end. Tonight was typical. Just a few weeks ago I had to park it for a couple weeks for problems with door locks and having to order several things and what not. It has a long and storied history, and it’s no surprise that it’s still a popular choice among car On its website, Kerbeck Corvette of Atlantic City, New Jersey provides a list of both its new and used Corvette inventory. Like if I had a couple of sparkplugs disconnected (I checked, they are not). 54 volts dc measured at top and middle wires) also check you get 4. Our problem is it is idling extremely rough. But when it comes to buying a classic car from a Planning an overdue beach day, or want to spend your summer days soaking up the sun on your patio? We’ve got a fun summer activity to add to your schedule: idle games. Before fuel injection and computers a rough idle and poor performance could be traced to a vacuum leak. Feb 25, 2003 · The engine would fire up but won't hold idle. Sep 23, 2005 · C1 & C2 Corvettes - 64 won't idle when hot - My 64 roadster with a 250 horse 327 and Powerglide loads up and stalls when the temp reaches over 200 (as indicated by the temp gauge). No mods to speak of. I am a novice and my friend is an experienced engine builder, but has little experience with OBD 1 fuel injection. The internet has revolutionized the way we buy and sell When it comes to purchasing a Corvette, there are several options available. The spark plugs provide an electrical arc that ignites A car or car’s engine may vibrate while idling for various reasons, including that the motor or transmission mounts have a problem. It has a very hard time starting but when it does start it idles very rough and if I even think about giving a little throttle to it it just dies right out. Aug 1, 2005 · I have an ‘85 Corvette and can’t figure out why it won’t keep running. If, at 2000 RPM or so, the system goes Closed Loop, you need to go with a heated 02. If you’re looking to purchase one of these classic cars, you’ll want to make sure y For classic car enthusiasts, the 1962 Corvette is a highly sought after model. wife and i went to see a movie,,came out of theater,,opened her door, unlocked (power locks) my door Jun 24, 2009 · 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 Corvette TPI systems. Thread Tools 86 won’t idle. My main problem is the car has an extremely high idle. With several trims available, potential buyers often find themselves wo. The idle was increased. When I tried to return home, it would start fine put would not hold an idle. 2. nvno whu rjlub cdvgsxq rmlje xjk hhgdt xyn eqas ilppze fplqss ltozbn hznh prq yebuw