Question about 1988 Chevrolet Cavalier Z24
Your problem seems to be the I.A.C. (Idle Air Control) motor. Located on the side of the throttle body assembly, this part is responsible for maintaining proper idle speed when the vehicle is idling. But before you start throwing in a new part, try cleaning the I.A.C. port first. Remove the 2 mounting screws holding the I.A.C. motor. Using intake cleaner spray (not carb cleaner), spray the tip of the I.A.C. motor to remove any deposits, wipe clean. Do the same for the "hole" that the part came out of; use a Q-tip to get in deeper into the port. Get as much of the crud off as possible. Allow excess cleaner to evaporate before starting the engine.
I hope this helps...
Have a great day!!!
Posted on Apr 08, 2011
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Just a thought... Not a mechanic here but my 88 Cav was doing the same thing and I took to shop. I had three fuel injectors that were leaking. It runs like a champ now!! Check your return fuel pressure after you shut it down. Shop said it lost all pressure when turned off and that is how they knew.
Posted on Jul 14, 2011
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Posted on Jan 02, 2017
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