Blower motor not working

ISUZU
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RDARCHE
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  • 1 POST
I have a 1991 Isuzu pickup, 80,000 mi.
The blower motor does not work.

* I pulled the motor out, and connected it to a 12V source, and it works.
(it is a bit sluggish, so it may need to be replaced anyway)
* If I move the fan switch to one of the on positions, the AC will activate
(shows that the switch is good?)
* a voltmeter across the plug to the motor shows no voltage
* I also do not get a ground continuity at the plug to the motor
(assuming blue w/black stripe is ground, blue w/white stripe +12)

* bad wiring or relay?
Jan 20, 2006 at 8:02 PM
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2CARPRO JACK
  • ✓ASE Certified Mechanic
  • 11,533 POSTS
  • ASE Certified Mechanic
speed controller
Feb 2, 2006 at 3:36 PM
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BASSERMAN
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  • 3 POSTS
I think I have the same problem. I ran a few tests with the same results. By 'speed controler' do you mean the switch in the dash?

Thanks
Jan 30, 2007 at 11:51 AM
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