idles high when AC is on
idles high when AC is on Its a 2000 camaro ss m6. I had a vacuume leak when I bought the car. I replaced all the pcv hoses with rubber hoses and brass fittings. I replaced the tps (throttle position sensor) and the iac (iddler air control sensor). I cleaned the maf and intake. Now when I turn the Ac or heat on it idles up over 15-1700 rpms. I turn the fan off and it idlesback down to around 800 rpm. I dont know what else to do. Help me out guys.
My car did that at times, never really figured out what caused it. Then I decided to build it and ditched the AC. It don't idle high no more.. 
Really though, I never could find out what caused it. Mine didn't idle that high though, it just bumped up to around 1100
Really though, I never could find out what caused it. Mine didn't idle that high though, it just bumped up to around 1100 I think I narrowed it back down to my IAC. I pulled the autozone duralast replacement that I bought and it appears that it may be defective. The little post seems like its loose and I cant seem to tighten it. I installed the original IAC and it runs a little bit better but still not great. Has anyone had any experience with the duralast IAC? Do I need to reset anything when I install a new one? I must be doing something wrong because this will be the 3rd IAC I have put on this car?
