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Fan speed

Tiny
SNAGG 750
  • MEMBER
  • 1989 BMW 750LI
  • V12
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
I recently replaced the blower motor and the electronic controls. The blower motor only blows at one speed (med.) What other causes could there be or what else should I consider?I am considering Sword unit or blower motor resistor. Which would you think is more likely? I'm told that there is also a Aux. Fan resistor. What is this and does it have anything to do with my problem?
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Thursday, February 10th, 2011 AT 9:21 PM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
The blower motor resister would be the most likely there.
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Thursday, February 10th, 2011 AT 9:39 PM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
No resistor, that model used the "sword" P/N 64118390015
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Friday, February 11th, 2011 AT 2:24 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Different name, same job

https://www.2carpros.com/images/external/80987364.jpg
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Friday, February 11th, 2011 AT 2:27 PM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
What's in a name anyway. Just call it schwartz for that matter.
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Friday, February 11th, 2011 AT 3:24 PM

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