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1989 Mercedes Benz 300se Bower fan

Tiny
FTVANHOY
  • MEMBER
  • 1989 MERCEDES BENZ 300SE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
The blower fan for the heat and ac stoped working a few days ago I still get heat and ac but no fan is tere a thermo cuopler in the motor that tells the fan to turn on when it heats up or do you think the fan is bad and can you tell me were it is? Thanks Fred
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Monday, December 28th, 2009 AT 11:51 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi Fred, Welcome to 2carpros and TY for the donation and selecting us as your auto repair site Feel free to ask questions at anytime and Merry Christmas and a Happy New Year 2010

Lets start with the blower motor see pic below for location when you access the pig tail of the motor power the red wire from the battery positive post and see if it comes on-let me know, we still got more complicated stuffs to dig in


https://www.2carpros.com/forum/automotive_pictures/12900_blower1_6.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_blower2_7.jpg

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Tuesday, December 29th, 2009 AT 5:46 AM
Tiny
FTVANHOY
  • MEMBER
  • 4 POSTS
Blower is fine when I hook a ground wire too blue wire on motor and key is on. Any other ideas?
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Friday, January 1st, 2010 AT 9:32 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Sounds like the blower control unit-give me your email addy and I'll send you the electrical schematic diagram
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Friday, January 1st, 2010 AT 10:34 PM
Tiny
FTVANHOY
  • MEMBER
  • 4 POSTS
E-Mail ftvanhoy@comcast. Net
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Friday, January 1st, 2010 AT 10:47 PM

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