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Eric
Eric, Automotive Repair Shop Manager
Category: Ford
Satisfied Customers: 29971
Experience:  Automotive Repair Shop Manager, Technician
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2005 f150. blower only runs on high, replaced selector ...

Customer Question

2005 f150. blower only runs on high, replaced selector switch, and a relay, no help. There is a blade type thingy in the heater boxe , i think it is like the old style resistor coil, ya think???? or what else do i look for?
Submitted: 8 years ago.
Category: Ford
Expert:  Eric replied 8 years ago.

Hi,

The usual problem when fan only operates on 1 or 2 speeds is the blower motor resistor. Here is location:

graphic

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Customer: replied 8 years ago.
adding a possible way to test minor electronic parts
Expert:  Eric replied 8 years ago.

Hi,

For most parts, you can check for voltage to the connector and check for resistence.

Here is test for the blower motor resistor:

graphic

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