Hey guys I have a 94 R2 and installed the power fc. I get setting 1 on the A/C ok but when I switch to 2,3,4 the A/C light comes off and no A/C. Is there a fix for this? also I think It always had that symptom even before the Power FC install. Any help or experience a fix for this would help!!!

 

SEARCH! There's at least 50 threads on this topic alone....

If your A/C was having issues before installing the PFC, then it's obviously not an ecu-related problem!