Have Ford Questions? Ask a Mechanic for Answers ASAP
How long does the compressor operate?
how long does it stay disengaged
are you sure the system is full
do you have any check engine light or codes in the system
The compressor run time varies. When we got it out of the shop it cycled fine for approx 2 hrs while running errands and then would not come back on at all.
I'm not sure about being disengaged. It's intermittent.
I can only go on what the mechanic told me. He said the system was full.
No check engine lights or codes. The battery light does come on occasionaly, but no one can tell me why, because evrything allways checks out ok.
I would focus more on the charging system at this point. Ask mechanic with A/c on is the pcm getting its signal from the low pressure switch. and if so is the ground signal leaving the pcm to activate relay. this might get him thinking . This vehicle is a later model. Kinda hard to believ pcm problems. these newer pcms do not go out often.