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Message: <blockquote data-quote="ORVietVet" data-source="post: 24854" data-attributes="member: 9438">We know the temp actuator, on the passenger side is failing, simply because it makes the ratcheting noise, during movement. That actuator's problem, was admitted to from the beginning. That does not explain how the compressor was shutting down and causing the whole system to blow warm air, when set to cold.During the calibration process today, the left temp actuator, located above the transmission hump, was working fine and was blowing cold when, after the first calibration attempt I had cold on the left and warm on the right. Then a second calibration caused both sides to blow cold and then warm when commanded to.I still believe that the first calibration did show the weakness of the right-p/s temp actuator and then it decided to work after a 2nd calibration attempt. BUT, I would bet she will experience a warm out of both and a compressor clutch not engaging, sometime down the road.</blockquote>