How about an Idle Control unit. I tapped mine and it killed the car. Thought it was a coincidence, but started it again and it was idling high and low fluxuating between 1500 and 1000. Tapped the ICU and it killed the car again. Also I tested the ICV and with it disconnected it started without accelerator being used and the rpm cold was 1100, tried the same test hot and it started right up with no Accelerator assist but rpm was 1500. I have a new OPR coming, but I think I need a new ICV too. The ICU thing is just thrown into the mix.