Question about 1998 Ford F150 Regular Cab

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Heat fan only works on hi - 1998 Ford F150 Regular Cab

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There are only a couple of things that could cause this issue, and I would start with the simplest thing first, and that is to check your fuse panel. Your blower will operate only on high because it is wired to do so on the number 4 setting as it bypasses the blower motor resistor. If the fuses are good, then the blower motor resistor is the next step, and this can be found close to the blower motor, as the blower motor, when on, cools the resistor, when the resistor gets old and to hot, it will blow, thus causing your fan to only work on high. If the resistor is good, then the last thing that you would check is the fan selector switch. I seriously doubt that it is the switch, it is usually the fuse, or the resistor.

Posted on Mar 22, 2011


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