The blower resister could be bad, or the blower switch could be failing. Check the resister first, it is commonly mounted at the rear of the blower housing under the hood.
The switch had a meltdown or the high speed relay is stuck.
cause its a ford and there pieces of s**t
You will only have high speed fan
I'm not a mechanic, but I do believe if you bypass the resister you will only have high speed on the fan. To that end, if the resister is your problem you should already have only high speed on the fan.
Sounds like the fan switch is fried. If it is stuck on high speed the blower relay may also be fried.
The blower motor resistor is bad and goes to high fan.
i have a problem with the automatic climate control the fan has only high speed
same as low speed relay its call fan mode
This fan has three speed settings, low, medium and high.
Resistor on the heater blower motor has failed
One of your capacitors in the fan is not operating. I had the same problem. If you still have the high speed working on the fan there is a work around. If it is the high speed capacitor that is gone, take the fan apart and use one of the other capacitors to replace it. Use one that is closest to the rating of the high speed capacitor. In the high speed run the fan will not be using the internal fan capacitors for the lower speeds, so cap the wires off with wire nuts that come from the fan motor to the capacitors. Move the connections around until you get the high speed position to work. This work around requires that there is a wall switch that operates the fan. A Lutron model number DVFSQ-F will work very well with the fan. There is a toggle on the right side of the switch that selects the speed, low, medium and high speed. Depending on the position of the slider switch, that is the speed the fan will start in. The new fan switch is wired just like an ordinary light switch.
Could be a bad fan motor resistor