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Randall C
Randall C, ASE MasterTechnician
Category: Ford
Satisfied Customers: 12744
Experience:  35 years ASE Master Tech, Diagnostic , Electrical Specialist
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I have a 1997 ford f250. The issue is the interior fan is

Customer Question

I have a 1997 ford f250. The issue is the interior fan is inop. The blower does not work at any speed. I know it by passes the blower module when on high. Could it be the blower fan switch ... I have checked the the wire harness to the switch and show no power to switch ????
Submitted: 11 months ago.
Category: Ford
Expert:  Randall C replied 11 months ago.

Hello, engine size?

Expert:  Randall C replied 11 months ago.

sorry see it now, back shortly

Expert:  Randall C replied 11 months ago.

ok, the high speed bypasses the blower resistor, so resistor is not the problem, The switch will not have power to it, it only makes grounds, so,, if you have power to one wire at the blower with key on and temp controls set and blower on, then 99.9% you have a bad blower, I would then set blower on high and begin tapping hard on the blower with hammer etc as it may be stuck, we do this in the shop as well, I lean to bad blower

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