Best answer: How can I tell if my blower motor is bad?

How do you test a blower motor?

How to Test a Blower Motor

  1. Use voltmeter or ohmmeter to check for a blown fuse. If you find one, replace it.
  2. Start car and see if blower motor works. …
  3. If the circuits are in good repair but the blower motor keeps blowing fuses, replace the blower motor [source: You Fix Cars].

How do you tell if it’s the blower motor or resistor is bad?

Symptoms of a bad heater blower motor resistor

  1. Fan does not work at all, so no air comes out of the vents.
  2. Fan only works on some speeds and not others.
  3. Fan only works on the highest speed.
  4. Fan runs all the time and can’t be controlled with the fan switch.
  5. You see smoke coming out of the vents.

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.

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What happens if the blower motor goes out?

Signs of a bad heater blower motor

If the motor is worn out or damaged, it will be unable to generate the airflow necessary for the heating and air conditioning to work properly. Other related causes are possible, so have your mechanic diagnose and repair the problem as soon as possible.

What can cause a blower motor to stop working?

In a situation where the motor doesn’t work on any speed, the most likely causes are: a blown power supply fuse, a bad motor ground connection, bad motor speed control module or a failed motor. On all systems, a failed blower motor is least likely. Start by checking the blower fuse and HVAC controller fuse.

How much does it cost to replace a blower motor?

Cost to Replace Central or Forced Air Blower Motor

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 happens when blower motor relay goes bad?

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 from a bad relay will blow the fuse and cut power in order to protect the system.

How much does it cost to replace a blower motor resistor?

The average cost for a Blower Motor Resistor Replacement is between $108 and $137 but can vary from car to car.

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How long does it take to replace a blower motor in a car?

This is around a 4 hour job by an experienced Tech. At home, by a Novice with decent skills, about 5 hours plus!

Can a blower motor be repaired?

Blower Motor Replacement: When Good Parts Go Bad. … There are a number of things that can go wrong with your heating system, but if the air stops blowing altogether and the same is true on cold air settings, a blower motor replacement is likely in order. The good news is that it’s a fairly straight forward repair.

How long does it take to replace a blower motor resistor?

takes about 45 minutes.