compressor clutch on 2006 Ford F-250 Super Duty

So my ac quit blowing cold air. I checked the pressure and it was very low so I charged it back up. The ac blew cold air for a day or two then it went back to blowing warm air. I noticed that when the truck is running with the ac on the compressor clutch engages for a few seconds then then disengages for a few seconds and it keeps doing this indefinately. I checked the pressure and that is fine, do I need a new compressor or is there something else going on?

by in Columbia, MO on July 27, 2014
1 answer 1 comment
ANSWER by on July 27, 2014
Exactly what are you defining as good pressure? What are your high AND low side readings , while it's running , both when the comp. kicks on , and when it's not engaged. That info is very important.
COMMENT by on July 30, 2014
On the low side pressure is 20psi when compressor is on and 40psi when off. I do not have the proper equipment to measure the pressure on the high side.
Related Items:
new compressor, condenser core, evaporator core, accumulator, Orpheus tube, and both lines from the compressor. also the switch for the hot cold door.

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