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View Full Version : A/C makes car idle low and rough... wtf?



blh1983
07-29-2007, 07:29 PM
Ok. When I turn on my A/C it kicks the idle down about 250 rpms. I've tried adjusting the A/C Idle Boost but it has absolutely no effect. Which makes no sense because it used to work.. Now I did change out my USDM ECU for an EDM one. But is this the cause?? I've also taken apart the black box and the little filter that connects to vacuum line 19 is clean. Someone please help! Thank you in advance....