Blower motor does not work
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Blower motor does not work
On my 2002 Explorer, the heat/ac blower motor quit working. Fuses and relay seem to be OK. Gave no warning before quiting. Got in it one day and no air movement. Is there a way to check the motor? Could it be the resistor? Does not work on any speed. Any help would be greatly appreciated.
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Joined: Jan 2002
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From: suburban atlanta
You can check the blower motor by supplying 12v to the lead going to the motor. You can check the dropping resistor pack using a DMM, or volt/ohm meter. You can check the fuse by measuring the VOLTS across the fuse. If there is a voltage difference, the fuse is open. You can check the switch by looking for voltage at the resistor pack.
The order in which you do the above is relatively important. You can work from one end to the other, or not. I would check the fuse, and if OK, I would check for voltage at the motor, then the resistor pack, then the switch. The switch is hardest to get to, so why tear apart the dash...
Most times the resistor pack fails and lets you run the fan on HI, as that bypasses the dropping resistors. If the motor has worn brushes, it may or may not come on and go off intermittently. New motors are generally less than $50.
tom
The order in which you do the above is relatively important. You can work from one end to the other, or not. I would check the fuse, and if OK, I would check for voltage at the motor, then the resistor pack, then the switch. The switch is hardest to get to, so why tear apart the dash...
Most times the resistor pack fails and lets you run the fan on HI, as that bypasses the dropping resistors. If the motor has worn brushes, it may or may not come on and go off intermittently. New motors are generally less than $50.
tom
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Joined: Dec 2008
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Yellow/black?
My 2000 f159 4.6L blower just quit one day.
It doesn't work on any speed.
I'm rather inept at fixing anything but I don't have the cash to take it to the shop and I've got a trip upcoming and I need my a/c working again...
Here's what I "know" so far:
-I have located the blower relay (next to the flasher relay under dash)
-located resistor pack
-located blower motor
I need to start trying to run down the issue so I guess the fuse is the first place to start.
Which fuse am I looking for?
TIA
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Joined: Jan 2002
Posts: 4,907
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From: suburban atlanta
Get a volt/ohm meter or a tester with a probe and lightbulb built into the handle. Ground one end of the tester. Probe both sides of the 'heater blower' or 'blower motor' or whatever words they used in the fuse box. BOTH sides should light the test light.
If it does, turn the key to ON, turn the heater to panel and turn the blower to hi. Use the test light to see if any of the wires leading into the resistor pack have voltage. One for sure should, and one leading to the motor should. The motor has two wires. One is ground, the other is power. You could check there first, and know right now if the motor should be blowing.
tom
If it does, turn the key to ON, turn the heater to panel and turn the blower to hi. Use the test light to see if any of the wires leading into the resistor pack have voltage. One for sure should, and one leading to the motor should. The motor has two wires. One is ground, the other is power. You could check there first, and know right now if the motor should be blowing.
tom
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