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A/C compressor is always on

Tiny
SHAGGY_CAR
  • MEMBER
  • 2004 DODGE RAM
  • 5.7L
  • 6 CYL
  • 4WD
  • MANUAL
  • 268,000 MILES
Seems to cycle properly, but I do not have the A/C button pushed to the on. When I turn the blower motor to off the compressor does turn off.
Saturday, August 17th, 2019 AT 7:56 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Welcome to 2CarPros.

Either you have a short to power, or the defroster is on. When the defroster is on, it uses the AC to help dehumidify the air. Is that a possibility?

Let me know.

Joe
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Saturday, August 17th, 2019 AT 8:44 PM
Tiny
SHAGGY_CAR
  • MEMBER
  • 3 POSTS
Bro you nailed it defrost is on. Put the floor on and it quit. Thank you so much!
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Monday, August 19th, 2019 AT 6:31 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Welcome back:

You are very welcome. That is a common concern. Most people don't realize the defrost uses the AC to work better.

Take care and let us know if you have questions in the future.

Joe
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Monday, August 19th, 2019 AT 7:12 PM

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