This problem does not always occur when the conditions are right which makes it double bad as the garage I take it to tries to duplicate the problem which is: Very high idle(3500rpm)when engine hot on a 70 degree day or more.I was driving down a steep mountain road with 4 passengers and it was all the brake power I could use to keep the car to the posted speed limit. I put the car into neutral and the engine screamed up to 3500+ rpm just so I could slow it down, it stays idling high until I shut it off and let it cool. I'm taking it again to a shop who says they have an expert on this so will post results.
Update from Jun 18, 2013: It was the speed control unit pulling on the throttle when it got hot.
This problem does not always occur when the conditions are right which makes it double bad as the garage I take it to tries to duplicate the problem which is: Very high idle(3500rpm)when engine hot on a 70 degree day or more.I was driving down a steep mountain road with 4 passengers and it was all the brake power I could use to keep the car to the posted speed limit. I put the car into neutral and the engine screamed up to 3500+ rpm just so I could slow it down, it stays idling high until I shut it off and let it cool. I'm taking it again to a shop who says they have an expert on this so will post results.
Update from Jun 18, 2013: It was the speed control unit pulling on the throttle when it got hot.
- Gary B., Saltspring, British Columbia, canada