You can jumper the pressure switch connector. Just unplug it and jumper it. If the clutch engages, then you know the wiring works.
awesome.. i was just checking... i think i'll do that at lunch since i drove the truck today..sewiv said:You can jumper the pressure switch connector. Just unplug it and jumper it. If the clutch engages, then you know the wiring works.
looks like its $14 here...still not too bad. I'll jumper it to see if the clutch engages, if it does i'll just replace that switch....convieniently enough i can see the parts store from my office....Cobra Jet said:just go to your local auto parts store and get a new A/C pressure switch - it's only a $7-$10 part. Just unplug the connector going to it, then unscrew the old one with your hand. When you go to unscrew it it will make a slight "air burst", nothing to worry about as it seals up immediately. Take your new A/C pressure switch and screw it back on by hand and plug the connector back in... your A/C should work now.
I had this happen on a few Mustangs (including my 94 Cobra) - one day the air is ice cold, then the following day the air was luke warm... changed out the inexpensive pressure switch in a few seconds and I had instant cold A/C again.