Followed your advice. Purchased a new throttle actuator($264) installed it and no change. Scanner says "lost contact with throttle actuator". Checked all wiring and it looks in good shape. The car decided to run properly a few days ago. I drove to the store and around town. Parked the car overnight, would not run with throttle control the next morning. I have disconnected the battery and left it overnight. Re-connected the battery, car still will not run with throttle control. The car is in the driveway with the new throttle control actuator and will not run with throttle control.
You start the engine, its revs up and settles to idle. Put it in gear and it will very slowly gain rpm. As you gain speed it will accelerate to about 25-30 mph. No throttle control(foot feed). I noticed that before the car reverts to normal operation, it will decrease throttle to very low idle. I turn the engine off and wait ten seconds and the car will operate normally. The normal operation will not last long and the car reverts back to no throttle control. I am beginning to think I have a faulty ecm. Do you have any ideas?
Regg in Alaska
Monday, April 14th, 2014 AT 3:16 AM