Having problems with your 2005 Ford Excursion ?

Fan on High Only

\015 The fan will only run on high...doesn't matter how its adjusted, temp, auto. The back fan works fine, just the front compartment.\015 Posted / edited by AnonymousUser on : 24-09-2018

Answers :

The fan motors use a set of resistors to control fan speed. The lower speeds generate more heat in the resistors and these tend to burn out. While it is possible the switch could be the issue, I would start with the resistors. It is usually a module located somewhere near the blower motor.

Note: One of the reasons these go out, is that with time the bearings on the blower motor go bad and the motor takes more power to run. If the replaced resistors fixes the problem, but then fail too soon, look at replacing the blower motor as well.
Repair Help & Product Troubleshooting for 2005 Ford Excursion

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