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blower fan only works on high? blower fan only works on high?
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Old 09-13-2009, 12:09 PM
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Join Date: Dec 2004
Vehicle: 1999 FORD F-150
Posts: 27
Question blower fan only works on high?
My 1999 My blower fan works on one speed only. It will work on high and will not run in any other position. What can be causing this?

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Old 09-13-2009, 12:49 PM
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Join Date: Oct 2006
Posts: 39
My guess would be the switch....
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Old 09-13-2009, 04:46 PM
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Join Date: May 2008
Location: Syracuse, NY
Vehicle: 2006 Ford F150
Posts: 477
In my 06' the same thing happened it only worked on settings three and four but not one and two. I changed the resistor and everything works great now only cost me $30. Im not sure if its the same things with the 99' but it probably could be.
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Old 09-15-2009, 09:44 PM
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Just as "aPINCHbetter90" said your "Blower Motor Resistor" has burnt out.
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  #5  
Old 09-16-2009, 10:57 PM
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Join Date: Sep 2009
Posts: 29
Quote:
Originally Posted by jims99fordf150 View Post
My 1999 My blower fan works on one speed only. It will work on high and will not run in any other position. What can be causing this?
My 99 I just bought has the same issue. Where is the Blower Motor Resister, if this is the root cause of the issue?

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Jeff
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