2001 Ford F150 Heater Fan Only Works On High

If your 1997 2003 ford f 150 a c heater fan only blows on high or doesn t blow at the lower speeds you most likely have a failed blower motor resistor.

2001 ford f150 heater fan only works on high.

The only way to regulate it is to shut it off or turn it on. You won t likely find it by looking at the system wiring just know that it is a flat plastic piece mounted by a screw or two i believe with the plug into it. Any obstructions or hindrances can blow the resistor quickly. And yes the resistor is bypassed with the fan is on high.

This happens very often to ford pickup truck or suv. Or if possibly it may be a recall item. All you need to do is to replace the resistor ford part number. 4l3z 19a706 aa or napa part number.

Dude the reason the fan only works on high is because the resistor is bad. What answered by a verified ford mechanic we use cookies to give you the best possible experience on our website. It mounts under the dash on the firewall on the passenger side. Heat still works only on high setting.

Call the ford dealer get the part like 10. You should check and make sure the blower motor is working properly not jammed or any obstructions preventing the free movement of the blade fins.