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Cooling fan

Tiny
TARITACLEO
  • MEMBER
  • 2005 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 98,000 MILES
My car cooling fan work only whith the ac and when you shut down the ac the car get over heat why
Thursday, February 24th, 2011 AT 12:59 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
How hot is the engine getting?
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Thursday, February 24th, 2011 AT 1:28 AM
Tiny
TARITACLEO
  • MEMBER
  • 2 POSTS
Very hot because the fan never come on whithout the ac on
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Thursday, February 24th, 2011 AT 1:31 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
I asked because there may not be a problem. The cooling fan is a 2 speed and low speed comes on at 217 degrees and high speed kicks at 230 degrees. Depending how hot it actually gets, it may either be normal or it may be missing low speed. I would let it idle and let the temp rise as high as the red zone before shutting it off. That won't damage anything. If only high speed comes on, then you will have to find out why.
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Thursday, February 24th, 2011 AT 1:40 AM

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