The car starts and runs very well. The problem is the idle speed. When I start it cold, the idle runs up to around 1500 and slowly comes down. Once warm, it sometimes idles in drive at around 700, but sometimes after coming to a stop it is at 1200 IN DRIVE! When I put it in park, it goes up to like 1800. I pulled the IAC and cleaned it, it seemed to help for a few days, but now its doing it all again. Some posts say a bad IAC, others have said bad O2 sensors. PLEASE HELP, MY BABY IS SICK!!!