Idle Problem

1992 GA 2.3 SOHC with 159,000 Miles
First Start it up and in park it idles fine. While driving it idles fine in drive with foot on brake. After driving it and shifting to park it will die unless the A/C is on.

Any help would be appreciated
Thanks

Try cleaning the throttle body (TB) with carb cleaner or something. Sounds like your idle speed is too low, which may be caused by a clogged IAC port in the TB. By putting it in drive, or turning the A/C on it may just bring the RPM's up enough to keep it running.

DON'T use carb cleaner on the throttle body - it is too strong and will mess up your catalytic converter.

Justin's deffinately on the right track though. Pull off your intake, and IAC motor, and use some THROTTLE BODY cleaner instead to clean the hell out of the IAC motor's spindle end, the IAC motor cavity in the TB, and the TB itself.

If this doesn't work, other culprits could include a bad MAF, TPS, wires, plugs, coil packs, or a vacuum leak.

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