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Just checked the pressure and I am at the lower end - about 20 pounds. Gonna get a can and pop a little in. Probably will do it. No water inside the cab, so I am guessing all I need is a little juice.


yeah 20 PSI is definitely low. probably not enough enough pressure to cause the a/c compressor clutch to cycle. you have a leak somewhere in the system, probably an o-ring or the low or high pressure inlet valves.