AC WILL NOT TURN OFF

  • Tiny
  • Tiger Mechanical
  • 2004 Ford Ranger
  • 4 CYL
  • 2WD
  • manual
  • 155,000 miles

I just bought a used 2004 Ford Ranger where the AC compressor will not turn off. With the the climate controls in the off position the AC compressor will run. I have to un plug the compressor for it not to run. If I leave it plugged in overnight it will kill the battery. The unit pumps out ice cold air.

I am a refrigeration technician so I am pretty good with a meter and a set of guages. I will buy an AUTO AC adaptors to hook up to my guages if I need to.

When the truck is off with no key in the ignition and I unplug the copressor I will hear some kind of solenoid clicking.

Tom

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Friday, April 15th, 2011 AT 10:30 PM

5 Replies

  • Tiny
  • rasmataz
  • Member

Check the AC relay could be sticking

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Friday, April 15th, 2011 AT 10:52 PM
  • Tiny
  • Tiger Mechanical
  • Member

Where is it located?

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Friday, April 15th, 2011 AT 11:24 PM
  • Tiny
  • merlin2021
  • Expert
  • 17,589 posts

As far as I know the compressor does run all the time on these.

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Thursday, April 28th, 2011 AT 10:26 AM
  • Tiny
  • Tiger Mechanical
  • Member

Found the relay and replaced it. Working perfect now.
Thanks

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Thursday, April 28th, 2011 AT 12:57 PM
  • Tiny
  • merlin2021
  • Expert
  • 17,589 posts

Ok Very good, I was thinking about the blower on possibly older by a year or two giving contant flow.

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Sunday, May 1st, 2011 AT 1:53 AM

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