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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 10-29-2011, 03:18 PM
thomm thomm is offline
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heater fuse

when i replace the 30 amp heater fuse in the dash area and turn the heater on the the fuse glows orange in seconds then blows, where do i start to fix this, maybe at the fan switch, 94 F350 box truck
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Old 10-29-2011, 04:17 PM
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I would start at the heater fan motor; the circuit breaker/fuse blowing is telling you something in that circuit is drawing more power than it should be, and I believe that fan motor is the only thing in that circuit.

Does the motor turn easily by hand? If not, this very well could be your problem....
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Old 10-29-2011, 06:48 PM
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Originally Posted by ctubutis View Post
I would start at the heater fan motor; the circuit breaker/fuse blowing is telling you something in that circuit is drawing more power than it should be, and I believe that fan motor is the only thing in that circuit.

Does the motor turn easily by hand? If not, this very well could be your problem....

I'll second that!!!!
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Old 10-29-2011, 09:36 PM
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i can't get at it until monday but that's a good start i was thinking the switch
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Old 10-31-2011, 03:19 PM
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the blower motor was totally seized thanks for the suggestion on where to start looking guys
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Old 10-31-2011, 04:00 PM
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Thanks for the update, glad you got it figured out.
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