Problem with A/C system.
Every single GM car that I have had will adjust the temperature of the air coming through the vents even though the system is off. Even the electronic climate controls will do that. However, the compressor will not operate.
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From: Halifax Nova Scotia ASE Master Service Tech

Originally Posted by fuddyduddy121
Every single GM car that I have had will adjust the temperature of the air coming through the vents even though the system is off. Even the electronic climate controls will do that. However, the compressor will not operate.
Originally Posted by fuddyduddy121
Every single GM car that I have had will adjust the temperature of the air coming through the vents even though the system is off. Even the electronic climate controls will do that. However, the compressor will not operate.
So even when you have the blower off, the vacuum line can still open and close the heater hose valve, for what it'* worth. With the ducts closed and the blower off, you shouldn't get much if any hot air coming through anyway, but to be double sure about it, you can move the temperature setting to Cold as well.
Don't know if this falls under the same category but my AC system (94 se) has been givin me issues starting up the compressor. Have'n a had time diagnosing this one.
If the AC is turned on the car will engage the compressor for approw 1 sec and then disengage for 3 sec and so on.
The compressor seems to turn fine when engaged so where could the problem be? in the car or in the compressor?
Any input would be helpful
If the AC is turned on the car will engage the compressor for approw 1 sec and then disengage for 3 sec and so on.
The compressor seems to turn fine when engaged so where could the problem be? in the car or in the compressor?
Any input would be helpful


