Originally Posted by
ala_xfire
Could possibly be the TPS inside the throttle body too.
You can remove the black plastic cover and spray the contact fingers and the runs on the circuit board with contact cleaner.
( NOTE: If you plan on removing the throttle body for this, get a new O ring before you do. )
Are you sure it's not just a vacuum leak ?
Thanks for the suggestions. I'll look into the TPS as a possible problem too (good tip on the O-ring).
From what I've read about TPS problems, the engine typically will hesitate when the accelerator is pressed. When I blip the throttle or accelerate quickly, the engine responds immediately.
Also, re. a vacuum leak, it doesn't stall and doesn't hesitate when I mash the throttle - both of which are symptoms of a vacuum leak, right? I can't detect any hissing sounds either.
When I drove it this morning, it's revving even higher and I had to turn off the engine when stopped at lights.