Oldsmobile Questions? Ask a Mechanic for Answers ASAP
Has anything other than the plugs been replaced?
Replace the IAC valve (idle air control).
Its mounted to the throttle body and cost around 35 bucks for the part. These are real common to get carbon buildup on the tip of the valve and it wont close completely. You can try and clean it before replacing it but I recommend just replacing it.
Below are diagrams showing the location and what the valve looks like.
My goal is that you are 100% happy with my answer(s). I strive for a positive rating. It's the only way i get credit. If you have further questions PLEASE just reply and i will work with you as long as possible.
Any further questions?
If not kindly rate my service so I can receive credit for working with you today.