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Testing blower motor

Old 12-03-2011, 11:49 AM
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Default Testing blower motor

(Vehicle is a 97 F150 5 speed)


I am trying to fix my heat/AC problem. The problem is the blower motor does not turn on. Before I rip it out and swap the blower motor for another, I wanted to test if i was getting power to to the motor. Since the previous owner said he thought it was the switch.

I tested this cable right here with the key to the ON position and got no reading. Does this mean that my switch is bad?

Old 12-03-2011, 12:05 PM
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If your not getting fire there, it could be the blower motor resistor. Se if your getting fire to it next. Did you check the fuses?
Old 12-03-2011, 12:08 PM
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Where is this relay located? I'm new to F150s...
Old 12-03-2011, 12:15 PM
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Follow the wires from the blower motor. They will go to it. It will be screwed into the heater box. It gets a signal from the dash switch and regulates the speeds to the blower motor.
Old 12-03-2011, 12:25 PM
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Are you referring to the blower motor resistor? If so, I already replaced it.
Old 12-05-2011, 12:42 PM
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So I dropped the glove box, and removed the radio and surrounding parts. I still can't find the relay. Where is this thing? I was told it was behind the radio area up in the dash... ?
Old 12-05-2011, 06:31 PM
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I don't know for sure. I can check on alldata tomorrow at work. Try this link and see if it helps.
http://www.fordf150.net/forums/viewtopic.php?t=46482
Old 12-06-2011, 03:17 PM
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I will definitely check those areas listed on that site. I'm not sure if my 97 will have the same location as those 2000+, but its worth a shot.

If you find it in the all data, that would be great. Thanks.


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