Question about Chevrolet Corsica

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92 corsica wont stay running. cleaned MAF with spray!

Runs better out on road but when at idle it doesnt want to stay running. or it surges! trouble starting now! could it be fuel filter?

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The maf on it isnt used a maf only a temp sensor the software change made the syatem speed density controlled fuel.. but if you have a idle probel it may just be the Idle Air Control Motor or IAC try to put foor on the gas pedal a little whne cranking see if it fires right up if so suspect the IAC.. is if still cranks long time try the fuel filter but those usually will make lack of power before you get a hard start issue.

Posted on Feb 04, 2009


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I need to clean my Mass Air Flow Sensor on my 92 Chevy Corsica and am not sure how.

I can't tell you the exact procedure for disassembling the MAF in a Corsica, unfortunately. I can tell you that if you are able to locate and disassemble it, you should handle it with extreme care. The monofilament wires are extremely easy to break. Do not use any object to touch, wipe, brush or scrub at them. I personally don't recommend cleaning the MAF on any vehicle, but if you find that you must, you should use ONLY an electronic cleaning spray. CRC sells an excellent electronic cleaning spray that is non-damagine to plastics. Simply spray the MAF down very thoroughly with the spray and allow it to air dry before reassembly. Beyond that, anything you do to it would be likely to damage it. Any other types of cleaners, such as carb cleaner, would be likely to cause the plastic parts and other delicate electronic components to break down and be ruined. Good luck and let me know how it goes!

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1 Answer

Wont stay running

You may have a defective idle speed control valve. Clean it first.

Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

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