Why is my 1996 blazer AC compressor not disengaging?
5

Asked by SM Jul 27, 2020 at 07:37 PM about the 1996 Chevrolet Blazer LS 4-Door 4WD

Question type: Maintenance & Repair

My ac system was recently replaced (compressor, pressure hoses,
accumulator, and orifice tube), but now the new compressor will not
disengage. This is resulting in my car overheating (because the compressor
isn't cycling) and me not being able to turn the heat on (If I turn my climate
controls to the hottest selection, the AC is still going and my system is
kicking out cold air). I believe that the clutch for my ac is bad, so if you have
any advice for fixing that (should I start with wiring or the ac compressor
itself). or any tips on other ways to keep my engine cool, I'd appreciate it!

1 Answer
157,855

James answered 4 years ago

You have other things going on with the climate control system and the engine cooling system. The compressor running full time will not cause the engine to overheat. It will also not prevent you from getting heat when warmer air temperatures are selected. For example, the compressor runs when you select defrost. Sounds like a temperature door actuator problem. You are probably low on engine coolant, which can also cause you to not have any heat. Hope that helps! Jim

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