Like the title says my car won't idle with the AC on does fine with the AC turned off. After I drive a while with the AC on it seems to do better but it still boggs down a little then labors to idle normally. Plugs are fine, had Bryan at PCMForless bump the idle but no help, All the vacume lines seem to be ok ( are ther any certain ones I should look at for the AC), any sugestions would help thanks .... Matt

 

Make sure you're not maxing out your IAC at 160. It might need even more air (i.e. drill a hole in the throttle body). Also, did he bump up the closed throttle spark advance? From 20 to 30 or 35? That seemed to help me some too.

 

how do I check the IAC? Matt

 

Checked the IAC it is at 130 at its highest point when I first turn on the AC it is at 75 - 80 then climbs to 130 and the idle eventually smoothes out the spark advance is around 22-26 at idle then goes to around 40... Matt