No power to the compressor

Tiny
DFORBES129@YAHOO.COM
  • MEMBER
  • 2006 KIA SORENTO
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
We've changed the compressor, expansion valve and the dryer. I hooked the power from the battery to the clutch then it worked for 30 minutes then the blow off valve blew the pressure off and lost the gas. What could be wrong?
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Sunday, August 18th, 2019 AT 12:28 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome to 2CarPros.

Did you supply power direct from the battery? If you did, chances are the pressure got too high and the high pressure switch couldn't cycle the compressor off. The result is what you described.

Let me know if I understand correctly.

Joe
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Sunday, August 18th, 2019 AT 8:35 PM
Tiny
DFORBES129@YAHOO.COM
  • MEMBER
Yes, I got power directly from the battery. The wire that's going to the compressor has no power. What could be wrong?
Thanks
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Monday, August 19th, 2019 AT 6:10 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

The reason it blew was because it couldn't cycle on and off with direct power. It built too much pressure. As far as no power from the supply, have you checked the relay? It is in the under hood relay box. See attached picture.

Here is a link explaining how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know.

Joe
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Monday, August 19th, 2019 AT 7:03 PM
Tiny
DFORBES129@YAHOO.COM
  • MEMBER
Thank you very much. It was the relay. Thank yoh for your help!
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Tuesday, August 20th, 2019 AT 7:19 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

You are very welcome. I'm glad it fixed the problem.

Take care and let me know if you need help in the future.

Joe
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Tuesday, August 20th, 2019 AT 5:47 PM

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