Auxiliary fan not working

Tiny
JOHN TAYLOR2
  • MEMBER
  • 2001 BMW 325I
  • 2.5L
  • 6 CYL
  • RWD
  • AUTOMATIC
  • 170,000 MILES
Can start auxiliary fan with jumper wires, but does not run at operation temperature. AC stopped blowing cold air. Changed water pump, sensor in lower radiator hose and thermostat. No power in sensor wire mounted on fan shroud. #37 (50a) fuse is good. Help!
Sunday, October 9th, 2016 AT 10:52 AM

4 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,603 POSTS
AC is not working?
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Sunday, October 9th, 2016 AT 7:35 PM
Tiny
JOHN TAYLOR2
  • MEMBER
  • 3 POSTS
All functions on ac works but no cold air. Thinking it just needs charging but read that it is designed to stop working when auxiliary fan is defective.
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Sunday, October 9th, 2016 AT 9:54 PM
Tiny
JOHN TAYLOR2
  • MEMBER
  • 3 POSTS
Got one short reply/question from your expert and a page full of ads. Assuming when you sign in with facebook your questions are screened. Don't bother, I'll continue Googling it until I solve the problem.
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Tuesday, October 11th, 2016 AT 5:03 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,251 POSTS
Hi John sorry for the experience so far I will continue with you. There is no screening we just get a lot of questions.

The auxiliary fan will not operate if the ac is down on charge, here is a link to show you how you can add refrigerant yourself

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

Please let us know what you find so it will help others.

Best, Ken
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Wednesday, October 12th, 2016 AT 4:57 PM

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