(1) Faulty fan switch -OR- (2) the resistor on the circulating fan has gone bad.
Could be a bad resistor pack at the blower motor Could be a bad low speed relay
It could be the resistor, if it uses one, it could be the switch, it could be the relay if it uses one, it could be wiring or connectors or if it uses multiple motor windings to control speed it could be the motor. The Blower Motor Resistor Pack is defective. Replace it.
heater blower resistor has to be replaced. you have to remove glove boxthe resistor is to the right of the heater blower moter
If the blower works on the defrost mode only, you could have a disconnected vacuum supply line coming from the engine. If the blower motor doesn't work on any mode or speed you could have a blown fuse, burned out blower motor speed resistor, bad switch or a bad blower motor.
Could be, Blown fuse, Bad blower motor, Bad blower motor speed resistor, Bad blower switch,
The blower resister could be bad, or the blower switch could be failing. Check the resister first, it is commonly mounted at the rear of the blower housing under the hood.
Could be, a blown fuse, a bad blower motor, a burned out blower motor speed resistor, a bad blower motor switch,
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.
Could be,The blower speed switch or electrical plug at switch is burned out. The high speed blower relay is burned out. The blower motor is on its way out. The blower motor speed control resister is burned out, The cabin filter (if applicable) is very dirty.
Could be,The blower speed switch or electrical plug at switch is burned out.The high speed blower relay is burned out.The blower motor is on its way out.The blower motor speed control resister is burned out,The cabin filter (if applicable) is very dirty.
The blower motor speed resistor is burned out. The high speed function bypasses the resistor. The speed resistor is generally located near to the blower motor.
Most likely cause is a failed blower resistor.
if your blower is working on low and medium speed then it's not a fuse it is the blower switch
Could be, blown fuse, bad blower motor, bad blower motor speed resistor, bad blower motor switch,
As for why it blows only on the high speed you most likely will have a bad blower resister and for the noise, it could be a bad blower motor, bad blower wheel or trash that is stuck in the blower wheel or housing.......
Check the fuse. Check the blower speed resistor. Check the blower speed control switch.
Could be,Blown fuse,Bad blower motor,Bad blower motor switch,Bad blower motor speed resistor,
there is a resistor that controls the speed and should be near the blower motor its called blower motor resistor
Blown fuse. Burned out blower speed resistor. Faulty blower switch. Bad blower motor.
I'm not a mechanic, but I do believe if you bypass the resister you will only have high speed on the fan. To that end, if the resister is your problem you should already have only high speed on the fan.
Defective blower motor, blower motor resistor pack, or blower motor speed control switch.
The blower is a multi speed unit.
If the one speed it works on is high speed, it is the blower motor speed resisitor that is bad.
Blower motor speed resistor is partially burned out.
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.