Idole to high - 1996 Oldsmobile Cutlass Ciera

Hi, Check for any Vacuum leaks. This can cause for engine to idle high or even rough. One other thing is a bad idol air control. Hope that helps. Go to your mechanic and have him do a computer code check.

you may have a tps sencer problem,,,

Idle problem like what? too low? too high? If it is too low it could be because your air filter is way too dirty or the throttle body has a bunch of carbon built up in it around the butterfly valve and gets no air at idle. If it is too high you have a vacuum leak. air sucking in from a cracked hose or intake manifold gasket. Check all your vacuum hoses and spray carb cleaner around the intake manifold gasket while the car is running.

check for air leaks on the emission system, if fine, check for the throthle posittioner disconect it, if idles good, replaceit, next go to the idle motor, is next to the throthle body, remove it and clean it with a good carburator cleaner, install it and start the car.
good luck.

Just adjust the idle down.

3.1 AND 3.8 ARE KNOWN FOR UPPER AND LOWER INTAKE GASKETS

Check for vacuum leaks on the high idol. You have a speed sensor or wiring issue with the tranny. Will need to be checked somewhere with a computer to know for sure on the tranny.

I have the same problem.... now it's getting worse and idling higher....If you find out the answer please email me at [email protected]... thanks

either the tps is out of parameters or you need to adjust the idle up a bit

the idle controll sensor is on the intake manifold replace it and reset codes