Well, I did an extended idle test with the A/C on, set to max cold output, outside temp was about 27 F. Compressor would occasionally cycle, both fans ended up cycling along with compressor, and/or between on at about 185 degrees indicated on the temp gauge, and off at around 172 F. I checked the temp of the T stat outlet housing next to the engine side end of the upper radiator hose with my Ryobi IR/laser temperature scanner and the temps there tracked very close to what was indicated on the dash gauge. Car appears like it can idle forever at about 175 degrees like this. I didnt try a run without the A/C turned off yet to see where the fans cycle in the A/C off modes.Originally Posted by Scottydoggs
I would not pull the A/C relay like you do, the compressor should be run every once in a while even in winter to prevent its shaft seals from leaking. That's why many cars turn on the A/C mode automatically whenever you go to straight full windshield defrost mode (At least most Fords do). On my GP SE, it looks like you have the option to run full defrost with or without A/C, i.e. you have to press the A/C mode button to allow the compressor to run. Not clear why yours would run all the time in A/C mode unless the A/C mode push button was stuck on...I believe it only is forced on in the MAX A/C position, the other positions require using the A/C mode on off button.
