Question about 1998 Chevrolet Blazer
I have a very similar problem in my 2000 Chevy Blazer 2x4. My A/C works intermittently, but most of the time is does not work at all. I went through a period where it worked all the time and now it is not working all the time. I had the freon level checked and it is fine. A faulty pressure sensor/switch seems likely cause as was mentioned in the response. Anyone have any ideas of how I can avoid the shop ripping me off?
Disconnect your high pressure switch when the compressor is not engaging and stick a paper clip in the wiring harness.. thus jumping both sides of the wires.. If the compressor engages then you know its a faulty pressure swicth.
Posted on Jun 27, 2009
You can buy the a/c pressure switch and replace it your self. It's located on the accumulator (air dryer) un-clip the wire harness and remove the switch and be ready with the new switch to replace, it's like replacing a oil sensor. Your not going to loose that much R134a, just have the new switch ready to place in the accumulator. Once placed if you have the gauges for the a/c, the low side should be 30psi to 50psi and the high side should be 150psi to 200psi with the a/c on the highest level. Any other readings will give you poor a/c performance. Good luck and keep me posted.
Posted on Jun 26, 2009
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Posted on Jan 02, 2017
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