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09-20-2014, 02:13 PM
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#1 |
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Registered User
Join Date: Feb 2010
Location: Houston, Tx
Posts: 349
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Blower motor keeps burning out
I have replaced the AC blower motor three times. On each occasion I would smell something burning in the AC vents. after about three hours of runtime the blower motor would just give up.
Any of you guys know where I should start first ? what could be causing the blower motor to burn up?
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09-20-2014, 04:27 PM
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#2 |
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Registered User
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,189
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Re: Blower motor keeps burning out
Did you replace blower motor resistor?
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09-20-2014, 06:24 PM
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#3 |
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Registered User
Join Date: Feb 2010
Location: Houston, Tx
Posts: 349
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Re: Blower motor keeps burning out
No, I have not replaced anything other than the blower. The speeds hi, med and low all work as they should. Think it may be worth a shot to just replace resistor anyway?
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09-21-2014, 09:59 AM
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#4 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: Blower motor keeps burning out
Check the fan ground. It may not be grounding properly.
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09-21-2014, 10:51 AM
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#5 |
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Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,620
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Re: Blower motor keeps burning out
Are you getting the motors from the same place? It is possible they have a bad batch. If these are all warranty replacements from the 1st one, verify the initial sales person pulled up the correct part number.
Check the voltage the the motor with the fan switched on. |
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09-21-2014, 11:53 AM
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#6 |
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,977
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Re: Blower motor keeps burning out
Make sure the blower motor is getting a good ground. My 75 had a braided strap from one of the retaining screws to the fender.
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And please let us know if and how your repairs were successful. |
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09-21-2014, 09:45 PM
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#7 | |
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Registered User
Join Date: Dec 2010
Location: Pittsburgh, PA
Posts: 1,009
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Re: Blower motor keeps burning out
Quote:
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Steve Member of the Foot Pedal Club '83 Chevy K20: 6" Rough Country, 3" Performance Accessories BL, Bushwacker Cutouts, 38x15.50 Mickey Thompson Baja Claws, 350 HP 350 crate engine from Jegs, Turbo 400 
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