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

2003 NISSAN SENTRA
37,000 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
FRANKROC
  • MEMBER
  • 4 POSTS
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
Nov 16, 2009 at 10:38 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Replace the blower motor resistor
Nov 16, 2009 at 10:45 PM
Avatar
FRANKROC
  • MEMBER
  • 4 POSTS
[quote:e7c0081081="rasmataz"]Replace the blower motor resistor[/quote:e7c0081081]

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.
Nov 22, 2009 at 12:49 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
The fan resistor is behind the blower control switch
Nov 22, 2009 at 1:13 PM
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 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

Nov 22, 2009 at 1:21 PM
Avatar
FRANKROC
  • MEMBER
  • 4 POSTS
frankhuang12 at aol.com
Nov 22, 2009 at 8:26 PM
Avatar
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.
Nov 25, 2009 at 4:56 PM