Question about Chevrolet Silverado 1500

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A/c compressor clutch will not turn on after winter my ac compressor would not kick on in my 1996 k-1500 5.7Lt 350

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  • Anonymous Dec 06, 2008

    my a/c light is blinking

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Make sure that the R-134a level in system is fully charged. If ok then check A/C Fuse. If it is ok, then check low pressure cycling switch as they were known as a week link! Go to tracing electrical from there GM had problems with HVAC control heads also. Hope this helps!

Posted on Oct 15, 2008

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Why does my ac compressor come on when I turn my heat on?


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Compressor and fans do not turn on until rev engine


I passed this question the first time I read it, so I will take a stab at it now.
The fans don't come on until the compressor has pumped the freon pressure up to say 150 or 200 psi. And the compressor clutch has to have voltage to engage the clutch.
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I have a 1993 c/k 1500pu ex.cab 350 v8 4 speed the ac worked fine last summer its been warm the last couple of days and ive tried turnning it on,the relay clicks but the cluch on the compressor only has...


The compressor clutch will not engage if the r134a is low
You need to charge your system.
Most systems require that you turn on your A/C once a month even in the winter
This helps keep the seals in working order.
Hope this helps FixYa

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1 Answer

I have a 1999 Ford Expedition, Eddie Bauer. The ac compressor clutch will not kick in when useing the climate control. The system is fully charege. I ran power directly to the comperssor and the clutch...


Check the high and low pressure switches, either switch can cause the compressor not to run. Look for the switches in the high and low side lines. Hope this helps, let me know.

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Now the A/C compressor, damaged and refusing to turn may be able to stall an idling engine, with todays cool serpentine belts... (In the olden days a belt would burn through and come off.)

The cheap solution to this condition is to turn off the car, and CAREFULLY unplug the compressor's electrical connection. Securely tie the wires out of the way, and test again...

You may want to consider repairing it, however, because the principle of refrigeration is a KEY COMPONENT to defrost in the winter...

Why? Because everyone knows a car air conditioner pulls moisture out, right? That crystal clear water that leaks out under air conditioned cars....
WELL, in the winter, rainy weather for example, is moisture. ....No remove moisture and no defogg.

Doc

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