When a blower motor resistor fails What is the tell tale sign to the technician that the blower motor blower motor circuit needs to be looked at?

Common signs include the car’s heater not working or getting stuck on a certain speed, or something getting jammed in the blower motor.

What are signs of a bad blower motor?

Here are just a few of the signs that your blower motor is going bad.

• Weak airflow. This is one of the first signs of a bad blower motor that people tend to notice.
• Noises. Have you noticed any unusual noises coming from your vehicle’s HVAC system?
• Smoke or smells.

Why is my front AC blower not working?

I’ve seen many posts from people whose front AC blower would stop occasionally. My wife would kick the wires under the glove compartment and it would start again. It finally failed altogether. Following the advice from other owners, I replaced the blower motor resistor. That didn’t help.

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 does my Ford Expedition not have a front blower?

I bought a used 2017 expy from carmax and had no front blower. They sent it back to the dealer and I wanted to know exactly what was found. I was told the 40 amp fuse had a bad connection and was reset with dielectric grease, that was it, has worked fine since.

What happens if you have a bad blower motor?

The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. Without it, the AC system will not be able to circulate any heated or cooled air.