We have a 1995 Ford Explorer Limited. The blower for the heater/ac will not turn off, even with the key out of the ignition. I cannot seem to find any associate relay or other component. Also, the fan controller switch (vertical roller switch) has no effect on the fan speed. Any suggestions?
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Re: 1995 explorer heater/ac blower motor
I would check to see if there is a short on the fan controller switch and the motor. sounds like a crossed wire, especially if it's ignoring your speed selection and running when the key is out. could be near the fuse box under the dash. the cig lighter circuit is live all the time as well as a couple others, it maybe crossing with it. I would pull the fuse panels assem down and check for crosses and shorts.
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You probably have an automatic unit and the problem could be in the control head. The best way to find out is to unplug the unit. It has to send the ground path for the fan to run. These have been known to give problems.
that cliking you hear is most likely the heater relay. but i don't think thats it, i would be checking to see if there is a resister, for the blower motor, it should be someware around the blower motor along with the relay in the same place. it will be on the heater box held in with a couple of screws, and a plug going to it with 4 or 5 wires.when they go bad, blower may only work on one or two speeds or not at all.
Dis you chanfe the blower motor speed controller? It is mounted right near the blower motor itself.... attached to the blower motor via a electric cable.... held in place in it's mounting by 2 screws into the heater AC case