2006 BMW 325 Fan running very loud when heater is on..

2006 BMW 325
64,000 MILES • 6 CYL • 2WD • AUTOMATIC
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ASHALL29
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I noticed my fan was making a loud noise when my heater is on. It gets really loud and goes up than down and up and down. Sometimes it won't go off. Sounds like an airplane running. Then today when I was driving it the hot air turned to cold and the temperature light flashed on and the car overheated. It only makes the loud noise when the heater is on. Any suggestions would be appreciated. Thanks!
Mar 1, 2010 at 7:46 PM
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DOCHAGERTY
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I wish to be clear, which fan are we talking about here, the auxiliary fan or the blower fan for inside the car?
Mar 2, 2010 at 10:57 AM
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ASHALL29
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The auxillary fan.
Mar 2, 2010 at 6:36 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
I would take the over heating issue first, the aux fan might just be normal noise, I can't tell from cyberspace.
Mar 2, 2010 at 10:48 PM
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