Air conditioner only works if bypassed

RETAS DEMOTTE

MEMBER
2002 LINCOLN LS
3.9L
V8
200,000 MILES

Auto shop says he replaced compressor hoses and charged system. A/C works if bypassed but not with controls and the computer need replaced.

Wednesday, August 1st, 2018 AT 11:17 PM

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning.

Do you mean he said the PCM needs to be replaced?

Did he verify this by watching the inputs from the low and high pressure switches?

How did he determine the reason for the failure of the PCM?

Roy

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Air conditioner only works if bypassed

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