Why is the blower on my Jeep not working?
It first started that the passenger side was getting cold air, but now the blower won’t come on at any speed. It isn’t working at all. Could this be the resistor?
What to do if your blower motor is not working?
Use a test lamp or a multimeter on the blower motor connector. Make sure your getting 12v (battery voltage) from the blower motor connector while the setting is at the highest. If there is a battery voltage, the problem would be the blower motor.
Why does my Dodge Dakota blower keep going bad?
If you leave the blower motor switched continually on you may not notice this. If so I suspect that there is an earth fault on one of the wires connected to either pin 4 or 5 of the resistor. Here is a the blower circuit for a 2002 Dodge Dakota. Hopefully it is the same for your particular year model.
What causes a bad or failing blower motor relay?
Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current…
Why is my blower motor stuck on one speed?
Blower motor stuck on one speed A common symptom of a faulty blower motor resistor is a blower motor that is stuck on one setting. The blower motor resistor is the component directly responsible for controlling the blower motor fan speed. If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed.
How does a half speed blower motor work?
So a half speed driver request will result in the blower motor controller pulsing the ground connection off twice as often as when the fan is running at full speed. Carmakers use these three common wiring methods to supply power and ground to the blower motor in a manual system using a blower motor resistor.
What happens when a blower motor resistor fails?
The blower motor resistor is the component directly responsible for controlling the blower motor fan speed. If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed.
Why does the blower motor relay not work?
This suggests that the relay may be supplying power to the blower motor regardless of turning the switch off. The blower motor relay supplies power to this motor when you turn the switch to “on” that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all.
Why does my car heater blower not work?
When this happens, you may notice that you will not feel anything blowing out of the vents at all. This may also cause the blow motor to work intermittently. I would suggest having an expert from YourMechanic come to your location to diagnose your vehicle’s blower motor system.
Why is my Jeep Grand Cherokee heater not turning off?
The heater blower is stuck on in the high position on my 2005 jeep grand cherokee and will not turn off unless the igniton is turned off or the fuse is removed. I had it checked out and was told i needed a new blower motor resistor as well as a new blower motor.