Intermittent A/C issue.. NOT POWER FC
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Intermittent A/C issue.. NOT POWER FC
My A/C seems to work only sometimes. And when it does work it takes about 10 mins before it starts blowing cold. The light on the dash goes on and it starts blowing hot air at all speeds. Sometimes then all of a sudden the compressor seems to kick on and blow cold. The system was flushed and refilled and the compressor looks ok.. any other ideas on the cause?
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I had a problem long ago with my AC working intermittently. Turns out the thermal switch on the evaporator had a high resistance when closed, so the compressor would sometimes work and sometimes not. Every time I took it in to the dealer it would work fine.
#6
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You can, of course, replace the thermoswitch, but it will eventually fail again because some bonehead at the factory has connected it to operate outside of its design parameters. The problem could probably be mitigated with the addition of a damper diode across the t-switch. Automatic models, IIRC, are wired differently and don't suffer from this problem.
In any event, bypassing the t-switch will result in evaporator freeze up unless you cycle the compressor manually.
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Originally Posted by Speed of Light
In any event, bypassing the t-switch will result in evaporator freeze up unless you cycle the compressor manually
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