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A/C kicking on by itself

Tiny
TTHOMASMORAGA
  • MEMBER
  • 1994 MAZDA B3000
  • 6 CYL
  • 2WD
  • MANUAL
  • 101,000 MILES
I just noticed in the last few days a noise in my engine compartment that sounds like my A/C kicking in without me turning it on. When it kicks in, my rpm goes up a little higher which I would expect when idling. I pulled the electrical plug at the A/C compressor so it does not kick in. Anyone out there experience this and know what may be causing it?
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Wednesday, April 13th, 2011 AT 9:38 PM

3 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,873 POSTS
Are you using the defrost mode? If so, the AC is supposed to run to remove humidity from the air so it doesn't condense on the cold windshield and cause fogging.
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Wednesday, April 13th, 2011 AT 10:02 PM
Tiny
TTHOMASMORAGA
  • MEMBER
  • 6 POSTS
Thank you for your answer. I believe you may just be right, I think it was on defrost mode. Reminds me of Occam's Razor "the simplest answer is most often correct"

Tom
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Wednesday, April 13th, 2011 AT 10:14 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,873 POSTS
:) Wish they were all that easy! Anyhow, ... If you feel like thinking I'm smart, you just go right ahead and keep thinking that.
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Wednesday, April 13th, 2011 AT 10:28 PM

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