The truck is a '99 2500 Chevy pickup w/ 5.7L and AC. The AC compressor stops
working at will, but when working is producing cold air. The problem is
intermittent as one time it will work fine for miles and others it stops
cooling within a short distance, not necessarily completely up to temp, and
running the compressor. The person has not tried stopping the engine for a
few seconds and restarting to see if this resets the sensors, etc.
My question is what are the two sensors sensing on the AC system, one going
into the compressor on the top (HOT Side) and one going into the silver
canister on the firewall (COLD Side). If one of these is on the fritz will
it stop the compressor? What do they sense? Can they be replaced without
discharging the system?