the resistor for the blower motor is busted blower works on high with out it
I would suspect the blower motor speed resistor is bad.
I would suspect the blower motor speed resister is shot.
possibly a blower motor. or switch
The blower motor resistor pack is defective. Replace it.
Probably a bad blower motor resistor
Swap the relay with a known good one, many of the relays are of the same part number. Keep in mind that the blower motor relay only controls the high speed function. The blower motor speed resistor and the blower motor switch controls the lower speeds.
The blower motor is tired. It will eventually blow a fuse and/or burn out the blower motor speed resistor. Time to replace the blower motor. Also check connections for high resistance damage (melted connections).
Bad resistor at the blower motor? Bad blower motor switch?
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.
If the blower motor randomly and intermittenly quits and does not work, chances are good the blower motor itself is faulty, if the blower motor does not work on all fan speeds from low through high, it most likely needs a blower motor resistor.
Only for the high speed blower function. The lower speeds go thru the blower motor speed resister.
The blower motor fuse protects the blower motor electrical circuit. The blower motor relay operates only the high speed function of the blower motor. The blower motor speed resistor operates the lower speed functions of the blower motor.
replace the blower motor switch
The blower motor speed resistor is burned out. The resistor is located close to the blower motor and is easy to change. Your local auto parts store will have that part for you.
The blower motor relay for high speed would be located in the power distribution box under the hood.
A blower motor that only works on high is normally caused by a defective Blower Motor Resistor Pack. DRL, do not have a clue.
from what i have read it is the blower motor resistor it goes bad and only lets the fan run on high google blower motor resistor and read on
If you have no blower speeds at all, first check the fuse. If the fuse is okay I would suspect the blower speed switch and its electrical plug has melted. If the switch checks okay I would suspect the blower motor is bad. If you have high speed only, I would replace the blower motor speed resistor. If you have all lower blower speeds but no high speed, replace the high speed relay.
If the blower works on slower speeds only I would suspect the high speed blower motor relay (under the hood in the power distribution box) or the switch itself. The blower speed resistor is working if all the slower speeds work.
it's a problem with the blower motor resistor,
The blower motor speed resistor is burned out. The resistor is usually found close to the blower motor. Auto parts stores carry that part and it is easy to replace.
When you beat the blower motor, you are probably shaking the blower resister. The resister is what controls the blower speeds and is probably bad or loose.
truck blower only work on high
those trucks had common problem of the blower motor resistor going bad or burning out and it would only work on high speed. the resistor is located under the passenger side dash by the blower motor. hope this helps