93 Olds Acheiva - Testing the TPS and IAC?

How do I test the TPS and IAC? What ranges am I looking for? Any other tricks for checking if the timing belt has broke or slipped (other than the obvious taking cover off or watching the rockers)? 93 Olds Achieva Will not start was idling REALLY bad before death. Had to hold pedal to floor to keep running. Now it... show more How do I test the TPS and IAC? What ranges am I looking for? Any other tricks for checking if the timing belt has broke or slipped (other than the obvious taking cover off or watching the rockers)? 93 Olds Achieva Will not start was idling REALLY bad before death. Had to hold pedal to floor to keep running. Now it will not start at all. Occasionally sounds like it backfires thru throttle body.
4 answers 4