 Found problem..maybe?
I had the throttle position sensor checked 1 year ago, and this was the problem, but now it's solved. Today when the vehicle was idling I decided to disconnect the IAVC sensor, or I think that's what it is, but after doing so the idle became normal. I think if I replace this it should solve the problem of the high idle after driving for a while. How bad is it to drive with it disconnected for a while? I hope this info helps. | 
