Posted by Bob on June 05, 2010 at 09:27:21 from (69.178.228.68):
In Reply to: OT GM A/C Question posted by John T on June 05, 2010 at 08:23:10:
The pressure switch on the ACCUMULATOR is the "clutch cycling switch" that cycles the compressor "off" when the evaporator pressure drops low enough to indicate it's about to start freezing up, allowing it to restart when the temperature/pressure in the evaporator comes up.
A side result is that it also acts to protect the compressor by shutting it off entirely as the refrigerant gets low or absent altogether.
The high limit switch MAY be in the compressor or nearby in the discharge line.
Any wires to the compressor besides the clutch connector?
Am I understanding you correctly that you still have the cycling switch IN the circuit but are bypassing ONLY the high limit?
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