Signs Blower Motor Resistor Is Bad

- November 22, 2018

Blower motor resistors. Air on the side of caution.

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A failed blower motor resistor can cause issues with the operation of the entire heating and air conditioning system.

Signs blower motor resistor is bad. Does the noise change or increase when changing the fan speed. There are several symptoms that appear when the resistor of the blower motor is going bad. The most common symptom of a faulty blower motor resistor is a blower fan that only.

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. Usually a bad or failing blower motor resistor will produce a few symptoms. The blower motor will usually have to be replaced in order to restore proper operation to the system.

If you start at the blower motor and check resistance in the circuit you will find the problem in no time. Blower motor resistors can wear out. The blower motor no longer works correctly if this occurs.

The motor wears out over time and cant push as much air leaving you wondering what happened to the air power. This is a telltale sign of a bad blower motor. No air flow from the vents when the heater or air conditioning is activated is another symptom of a bad blower motor.

By eduardo ruelas on. The resistor of the blower motor is responsible for transferring the electrical current thats required to move air through the vents of vehicle. If one of the terminals has power and the other does not the fuse is bad.

One of the first signs of blower motor failure is weak airflow. Symptoms of a bad or failing heater blower motor resistor common signs include the cars heater not working or getting stuck on a certain speed or something getting jammed in the blower motor.