93 GT idle issues...

[93BlackBeast]

When I am driving and come to a stop, let's say at a red light, the rpm's jump and idle like at 1500-2000 rpm's. It does not happen all the time, just occasionally. Anyone know what the problem could be?

 

[I_AM_CANADIAN]

does it only happen when the engine is cold?

 

[Henceforward]

Pull of the IAC and clean it out real good with carb cleaner.

Set the TPS voltage to .90-.99

If your AC is off, turn it on, and that will drop the idle by 100-200 Rpms...

 

[HISSIN50]

yeah, since it is intermittant, the IAC probably has a hiccup. see if you can notice any other rhyme or reason that it will hang when it does.

good luck.