deuce4935

iTrader: (2)

I'm not sure if this is where I should be posting this but.... My car is idling exceptionally high. Its hard to start, meaning it cranks for several seconds before firing, but once started it idles at 1200rpm+, and then when I place it in gear(a4) the idle jumps up a couple hundred more rpms. This problem makes braking a real adventure and its causing the car to heat up. I've done a search and tried a few of the suggested remedies to no avail. I dont have a scanner to communicate with the pcm. When I first rebuilt the engine 2 years ago I installed a z06 cam without tuning, but I dont think that has anything to do with the idle being high or am I wrong. Any help is def appreciated.

Mystic Z-28

Have you checked for vacuum leaks? Those can sometimes cause idle issues you like describe.

RUTAN TA

I agree with Mystic that it sounds like a vacuum leak and i would start by checking the rubber elbow on the passenger side of the intake behind the throttle body.