Water can enter the blower motor due to several factors, including clogged drainage systems, damaged seals, or a faulty windshield. If the drainage channels are obstructed, rainwater or condensation can accumulate and seep into the motor housing. Additionally, if the vehicle's interior is exposed to heavy rain or flooding, water may enter through gaps or cracks, leading to potential damage to the blower motor. Regular maintenance and inspections can help prevent these issues.
Blown fuse? Bad blower motor? Bad blower motor resistor? Bad blower motor switch?
Could be, a blown fuse, a bad blower motor, a burned out blower motor speed resistor, a bad blower motor switch,
Defective blower motor or blower motor resistor pack.
No, that would have no bearing on the blower motor. Check the fuse, blower motor resistro pack, and the blower motor itself.
either the control head is bad or there is a blower motor resistor that is bad.
I would suspect the blower motor speed resister is shot.
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If you are referring to the blower motor squealing, then I would suspect the blower motor bearings have failed.
If you have checked the blower motor and it does function when power is applied then I would suspect the Blower Motor Resistor Pack is defective. It is also possible the blower motor speed control is bad, but highly unlikely.
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.
Probably a bad blower motor resistor
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.