Ac works when it wants to

2004 DODGE DAKOTA

287,000 MILES • 4.2L • V6 • 2WD • AUTOMATIC

REDNEKRODEKYLL

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So I have been having a A/C problem and it is blowing my mind.
One day I can start it up and A/C blows cold and compressor runs and the next day compressor will not kick on . Later that day works fine. Two days later compressor will not kick on. Just trying to show how random it is. when it runs I have checked on gauges 40 low, 300 high, 99 degrees with eighty percent humidity.
Would love some input on this.

Aug 4, 2017 at 7:36 PM

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STRAILER

AUTOMOTIVE REPAIR CONTRIBUTOR
54,178 POSTS

Hello,

It sounds like you have a compressor coil going out. When the compressor is not kicking on check the power wire with a test light.

Here is a guide to help you:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

If the compressor is getting power but not engaging it needs to be replaced here is a guide on that as well.

https://www.2carpros.com/articles/replace-air-conditioner-compressor

Diagram for your car below.

Please let us know what happens, we are interested to see what it is.

Cheers, Ken

Image (Click to enlarge)

Aug 7, 2017 at 10:55 AM