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Blower Motor 850 1997

posted by  Ozark Lee on  Mon Sep 21 03:50 CST 2009
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last visit: Thu Jan 3 22:08 CST 2013
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This is easy, you have a bad power stage (blower resistor). The blower always has (unswitched) battery voltage on it and the power stage controls the fan speed by pulse width modulating the negative side to ground. They fail in one of two ways - open where the fan will never run and shorted where the fan will never stop.

...Lee






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New Blower Motor [850][1997]
posted by  RTBimmer  on Fri Aug 7 09:56 CST 2009 >


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