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Because for each speed except the higgest one, to slow the motor of the fan, a resistor is choose and it's a big resistor, bigger to slow the speed and after long use or if the motor is defect (use to much currant), the resistor burn and no currant can pass trough
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What else would stop a blower motor from changing speed 1234speed dont work?
If you only have high speed I would blame the blower speed resister. If you have no speeds and the fuse is good, I would blame the blower motor or the switch.
Why would your blower fan stop working in your 93 cavalier the fuse is fine?
Defective blower motor or blower motor resistor pack.
Why would the heater and blower stop working on a 2000 grand am?
The blower may simply have burned out. If the blower is out then the heater probably still works.
Why does blower fan stop and start?
when motor stops, tap on motor and see if restarts. if it does replace motor. there is a bad spot on the armature. if not check the blower resister.
Why would a 94 civic heater blower stop working?
Blown fuse? Bad blower motor? Bad blower motor resistor? Bad blower motor switch?
Why would the heater stop working in my 2001 jeep grand Cherokee?
blower motor bad or no power to it chech fuses blower switch blower motor
What would cause the lower blower settings of the AC to stop working in a 2000 Alero?
Defective Blower Motor Resistor Pack.
What could cause the heater blower to stop working even after it and the heater control was replaced on a 1992 Ford Thunderbird?
You still have a blower resister assembly, wiring, and a blower motor itself, in that system. Any one of those could have a problem. You need to use a test light at the blower motor connector and see if you are getting both power and ground. If you are missing a ground, most likely you have a bad blower resister assembly. If you are mssing power, check fuses and wiring. If you have both power and ground, and the motor isn't working, you need a blower motor. I have also found that sometimes tapping with a screwdriver handle on the motor will make it come on, and if that is the case, then again, you have a bad blower motor.
Why would a blower resistor on a 1991 Chevy blazer stop working?
The blower resistor gets overheated and burns out usually because the blower motor is failing also.
Why would your ac stop working and your heat stop circulating?
Possibly a relation to the blower motor/ heater door accuators.
What would the blower stop working in a 95 passport?
alternator belt broke it drives the fan
Can a front blower resistor stop heater blower from working?
YesYes
