OK. I read all the threads (I think), performed all the checks and tests and I still cant figure it out. My AC blows hot air always. No leaks and has a full charge. Blend door is not working. No power to the compressor from the dashboard control unit. All fuses are good. The control **** is good too. I was going to take to an auto electrical shop and let them figure it out, but if someone here and tell me what it is, that would be alot cheaper...haha. Any suggestions? Its a hot **** in south eastern NC! Help.

Dan
97 F150 XLT Long bed

 

Try bypassing the switch if not

 

compressor does not engage. How should I bypass the switch?

 

take a piece of wire, umplug the connector near your service port from the switch and jump it. Turn on engine and AC and check if it works

 

sounds like a low pressure switch is bad.