If the blower motor is completely bad, then you'll have no airflow at all. Strange sounds coming from blower. Blower motors can make all kinds of sounds, depending on what the issue is. Vibrations, grinding, and high pitched-noises are some of the sounds a blower can make if it's going bad.No air from the vents If the heater blower motor burns out or short circuits, it will not function, and therefore will not be able to produce any airflow for the system. The blower motor will usually have to be replaced in order to restore proper operation to the system.
What happens when the blower motor on a car goes bad?
A bad blower motor will sometimes overheat, causing a “hot” smell to come out of your air vents. In the worst scenarios, your blower motor may actually start to burn. Yikes! What causes a bad blower motor?
Why does my heater blower motor resistor keep going bad?
The heater blower motor resistor can often go bad because of a bad heater fan, and therefore you often have to replace both the heater blower resistor and the fan. It’s also not a difficult part to replace. It might take you more time to diagnose the problem versus replacing the resistor.
Can a bad blower motor cause a circuit breaker to trip?
A blower motor that’s seized up is bound to trip a circuit breaker. (A bad capacitor will trip the circuit breaker too, so be sure to check that first.) Hot/burning smell coming from air vents. A bad blower motor will sometimes overheat, causing a “hot” smell to come out of your air vents.
Why does my AC blower motor relay keep blowing?
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.
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