How can I tell if my blower motor is bad?

How do you know if your blower motor is bad?

You might also hear ongoing whirring noises, or noises that change or get louder if you increase the fan speed. These are all signs of problems with the blower motor. In some cases, you may even notice smoke or smells of burning while driving, in which case you should pull over immediately.

How do I know if it’s my blower motor or resistor?

The most common symptom of a bad blower motor resistor is the blower motor will only work at one or two speeds. It can also cause the blower motor to stop working completely and you will notice no air coming from the vents.

What happens if a blower motor goes out?

If the motor either burns out or short circuits, it will not function at all, which means you won’t get any hot or cold air. … It will also make the blower motor want to work harder than usual to make up for it. Fans operating only at some speeds: In some cases, the fan may only work at certain speeds.

Why is my blower fan not working?

Make sure that the power cord hasn’t melted or a fuse hasn’t been blown. If your cables are looking fine, try unplugging the fan for a few minutes and then plugging it back in again. … If unplugging and plugging your fan back in again doesn’t work, check the fuse box.

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How much does a new blower motor cost?

Replacing a blower motor costs $450 on average with a typical range of $250 to $800. With a warranty, you might pay as little as $150 for labor alone. For high-end models, like those with large motors or access issues, you might pay as much as $2,000.

What does a bad blower motor sound like?

A defective blower motor will make a continuous sound noticeable by the passengers in the vehicle. It can manifest as a knocking, whirring, clunking, vibrating, squealing, or whining noise that persists until the blower motor is replaced.

Can a bad blower motor resistor cause no AC?

Power to the blower motor is fed through the blower motor resistor, so if it fails or has any issues power can be cut off to the motor. A blower motor without power will not be able to produce any air pressure, and as a result the heating and air conditioning system will be left with no air coming from the vents.

Do blower motors get weak?

Weak airflow is a sign of blower motor failure. This part wears out eventually, meaning its fans can no longer push adequate amount of air out the vents or through window defrosters. In other situations, air may not blow out on some speed settings at all.