I have a 1994 ford ranger xl 2.3 2 wheel drive. My fan doesn't work at all. It was working some times at all speeds and now nothing. I ran power to blower motor directly and it works. I replaced resistor even though mine looked fine and that didn't help. I don't know how to test the resistor or pigtail going into it. If anyone has ideas or videos that would be helpful. As I said I don't have any speeds on the fan. If the resistor is out I read that one speed will still work. Fuses are all fine. Anybody have any ideas? I'm wondering if it is the fan speed switch in the dash and does anyone have or know of a video on how to do this. I assume the dash has to be removed. Thanks!

 

Welcome to the forum

The resistor block is the GROUND for the blower, not the 12volt

The blower gets 12volts directly from fuse 9 in the CAB FUSE panel when key is on

The fan speed switch is the GROUND for the blower
In high its a direct ground to cab, by-passing resistor block
Lower speeds go thru resistor block

If no speeds work then either fuse 9 is blown or doesn't have 12volts with key on

OR..........the ground wire for the switch in the dash is bad

 

Thanks for the info Looks like it might be the ground wire On switch because it doesn’t work at any speed. Do you have any advice for how to find video or directions on how to replace the switch for the fan I have a hard time finding something on the Internet

 

Do you think it’s not the resistor I put in the the new one and it did not work and what I learned is that one speed would still work if it was the resistor problem?

 

Thanks for your help is there a way to test the plug that goes into the resistor with a multi meter or something to see if there is power going to the fan speed switch on that

 

There is no "power" at the fan speed switch, its a GROUND

You can test at resistor block for a good GROUND with ohm meter

Diagram below

Key off
Put switch in a position you want to test
Unplug resistor block connector
Test the wire color matching that switch position, on OHM meter put 1 probe on battery Negative(or good ground) and the other probe on the wire you want to test
Should see 0 OHMs, or very low under 4 ohms

If not then that position is not a good ground, change switch position and test again

Wire colors are
Orange/black stripe(O/BK) - high
Light green/white - med-high
Yellow/red - med
red/orange - low

If only 1 position is a good ground then replace the switch, they should all show 0 ohms when selected

 

Thanks for your advice I appreciate it.