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New blower motor vibrates 200 1988

posted by  Peter P. on  Mon Jan 18 20:33 CST 2010
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last visit: Wed Oct 13 19:34 CST 2010
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Just finished the heater blower motor/resistor swap. Unfortunately, I realized once it was buttoned up that the new motor vibrates like crazy, I can feel and hear it through the dash. What can I do now short of pulling everything apart again (8 hours of my life, gone...)

Prior to install I bench tested the motor and it sounded "normal". The box it cam in was torn up by the unprotected shafts, so I even inspected them for runout, but they looked fine. After installing fans on shafts, I made sure the spun freely. I guess I should have powered up the motor again at that point.

What could I have done wrong on install? If I dig in part way, can the fans need to be balanced somehow?

Peter P.
Portland, OR
'88 245






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New New blower motor vibrates [200][1988]
posted by  Peter P.  on Mon Jan 18 20:33 CST 2010 >


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