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2003 Nissan Sentra Heater fan stopped working at speed 1, 2

Tiny
FRANKROC
  • MEMBER
  • 2003 NISSAN SENTRA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 37,000 MILES
This happened all of sudden. When I put the fan at speed 1, 2&3, the fan won't start and there's no wind blown out. But when I put it at the high fan (4) position, it works fine. The heater seems to work, since I can feel warm air out of the vents. Any ideas?

Thanks,
Frank
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Monday, November 16th, 2009 AT 10:38 PM

6 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Replace the blower motor resistor
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Monday, November 16th, 2009 AT 10:45 PM
Tiny
FRANKROC
  • MEMBER
  • 4 POSTS
Where can I find the resistor? I've tried the fuse boxes, both in the engine compartment and the passenger compartment, in the hope to find some resistors. But no; none's there. And the fuses for the heater fan and blower are fine.
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Sunday, November 22nd, 2009 AT 12:49 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The fan resistor is behind the blower control switch
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Sunday, November 22nd, 2009 AT 1:13 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Unable to read the diagram below-give me your email addy


https://www.2carpros.com/forum/automotive_pictures/12900_fan_resistor_1.jpg

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Sunday, November 22nd, 2009 AT 1:21 PM
Tiny
FRANKROC
  • MEMBER
  • 4 POSTS
Frankhuang12 at aol. Com
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Sunday, November 22nd, 2009 AT 8:26 PM
Tiny
FRANKROC
  • MEMBER
  • 4 POSTS
Rasmataz's diagnosis is dead on. It is the blower resistor and here's a (http://wiki.answers.com/Q/2002_Nissan_Sentra_blower_motor_resistor) detailed guide of how to replace it. I bought one from a Nissan dealer for $27 and it took me about half an hour to replace the resistor.
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Wednesday, November 25th, 2009 AT 4:56 PM

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