Quote:
Originally Posted by vintshave
Ok, I shorted the plug as you suggested and heard a click. Not from the compressor, but from on of the square relays on the passenger side near the firewall. What is this telling me?
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the low pressure cut out switch connector you shorted out then a relay clicked ...I would check for pressure at the low side refrigerant port. with the engine off the pressure should be around 120 psi. If you have pressure over 20 psi this switch should short together and pass the power to the relay then compressor. using an ohm meter you could measure the switch resistance to see if it is open with pressure. if so the switch is no good. you simply un screw and replace it .
I would check the fuse , compressor fuse for being open .
with the engine on ,,,, ac on the pressure should drop to 40 psi APPROX WITH THE COMPRESSOR WORKING. which is not happening for you now..