Quote:
Originally Posted by cewyattjr
Why would the line be more pressurized with the A/C off and drop when the compressor is supposed to be on? Symptom of a bum compressor?
When switching A/C, I can hear what sounds like a "click" under the hood, and I check the pressure, and it drops considerably and doesn't appear to be "taking" the charge.
-Chuck
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I'm not an A/C Pro, but have recharged several systems over the years. The pressure on the "low" side will most always increase when the compressor cuts out. Actually that is a good indicator that the compressor is working!
At rest, the high and low pressures will eventually equalize and the pressure will be more than the "normal" operating pressure for the "low" side. I use a "Manifold" type gauge set from Autozone that lets me see both the high and low sides.
Good Luck!
Regarding not "Taking" the charge: I would guess you don't have a good path from the can to the inlet valve. You will have to inspect all pieces of the charging kit. It could be the can isn't opening, the valve won't let the gas out, the hose isn't depressing the schroeder valve.