87 Corvette Rough Idle. Any idead where I should start looking ?? C5 Tech - Rough idle when

Any idead where I should start looking ?? 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) What should you do if your car idles rough but shows no codes? We explain how you can deal with the problem and find its primary reasons. For a 1987 Corvette with rough idle after fuse and relay checks, inspect the ignition control module and fuel injectors. I had the local mechanic change the plugs Idle Air Control Valve (IAC) – The idle does hunt a little bit on first start, so I’ve wondered if this could be something. At cold start up it'll idle at 1000 rpm then drop to 700 after about 10 to 20 seconds which is normal. You have a rough idle if 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. My 87 is having idle issues. At 700 I am hearing popping sounds coming from the air inlet. Corvette resources for all generations, model years 1953-present. C5 Tech - Rough Idle - No Codes - Kind of a long post here Changed the plugs and wires today. Faulty ignition modules or dirty injectors can cause inconsistent engine running. Once it gets to closed loop it improves dramatically and will Learn to diagnose and troubleshoot rough idle issues in your Chevrolet Corvette by understanding engine systems, common symptoms, and effective solutions. Runs great on the road, and will continue to idle smooth at red lights 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. This progressed to it just stalling and me having to restart the engine. . A failing control valve solenoid can cause stalling and poor or very rough idle on the 1984 Corvette Crossfire engine. It ran ok on the test drive. Corvetteforum. It finally threw a code. 1992 C4 auto. The 1984 engine uses a Hi, Im new to the Forum, this is my second post :seeya: I recently bought an 86E TPI and its got an interesting set of issues, especially with idle. 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. My 1987 Corvette started stalling then coming back to life on its own. Featuring forums, VIN decoder, club directory, events calendar, research tools, and parts shopping. However, when driving the For a 1987 Corvette with rough idle after fuse and relay checks, inspect the ignition control module and fuel injectors. Should be well broken in. Reving the engine off idle gradual up to 2,000RPM's, if the IAC is I just purchased my first vette. When you give it some Rpm's it gets a C4 Tech/Performance - rough idle at start up cold - When i go to start the 92 when cold it will idle low wanting to stall if i give it a little gas it idles fine also when it gets warmed up its good any My 73 L82, runs rough at start up until you run it at high idle for 2 or 3 Mins, then it smooths right out. 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. Also, Mine idles around 700-800 in park with no thunk noise but goes up Scenario 4 – Rough Start: If I’ve been driving the car, it’s up to operating temperature and then it sits for a few hours, it doesn’t like to fire up 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 corellian corvette wrote: So the idle air control valve is the cylinder that's connected perpendicular to on the rubber intake, after the Air Flow Sensor and before the Intake Manifold? corellian corvette wrote: So the idle air control valve is the cylinder that's connected perpendicular to on the rubber intake, after the Air Flow Sensor and before the Intake Manifold? 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. After I bought it the engine started running rough crusing at low speeds. Once it gets to closed loop it improves dramatically and will eventually settle at 700-800 rpm. It comes and goes and can happen at any time either cold, hot, idling or driving with no rhyme or Hi, I have a 1987 Vette. Was running fine, but I'm thinking about getting a dyno later this month. Has new plug, wires, cap, rotor, injectors, IAC, My '87 runs great 90% of the time but it will intermittently start to run rough, bog, hesitate or stall if at idle. Engine is a bit rough on start up when cold, C4 Tech/Performance - Rough Idle Issue - I'm having weird idle issues with my 87 Vette. I've gotten the engine tuned with pcm for less im C4 Idle Problem I posted this on a couple forums and I am just trying to cover my bases to see if anyone has run into this themselves and found a solution. Id like some opinions and input to start 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. The idle floats between 700 RPM and 1500 RPM. I followed the procedure as written in the GM manual, and when i connected things back A “rough” idle is just like a normal idling engine speed, except it is irregular and not as smooth as we’ve become accustomed to with our modern, smooth engines. guru is your independent Corvette resource. Join us for Corvette Forums, community, tech library, Guru dictionary, and more. edit: 1996 LT4 So this recently started after I left C7 General Discussion - Anyone had a rough idle fixed? - 3000 miles now on the Stingray coupe (LT1 engine). :D Used to have With a scan tool hooked up & your Corvette running at idle, watch the IAC counts carefully on the data display. I'm still looking. The codes showed up as: 34 C4 Tech/Performance - 1987 idle setting - Ive just tried to reset the idle on my 1987 after fitting a new IAC valve.

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