Motor

Blower motor resistor keeps blowing

Blower motor resistor keeps blowing
  • 4750
  • Felix Grant
  1. Why does my blower motor resistor keeps going out?
  2. Can you bypass a blower motor resistor?
  3. What happens when blower motor resistor goes bad?
  4. Why does my blower motor keep burning up?
  5. What are the signs of a bad blower motor relay?
  6. What are the signs of a bad blower motor?
  7. Is there a way to test a blower motor resistor?
  8. How do you bypass a cooling fan resistor?
  9. Can you bypass the resistor?
  10. How much does it cost to replace a blower motor resistor?
  11. Can a blower motor be repaired?

Why does my blower motor resistor keeps going out?

In most cases, a blower motor resistor fails due to corrosion or overheating. Sometimes, the mechanical resistance to the motor rotation causes an excessive electric current that can overheat and prematurely damage the blower motor resistor.

Can you bypass a blower motor resistor?

Bypassing the resistors should run the fan on high speed. High speed requires more DC current, so high speed was fed through a relay and heavier wire to prevent the wire from burning up.

What happens when blower motor resistor goes bad?

If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed. The heating and air conditioning systems may still function at one speed, however the resistor will have to be replaced in order for full functionality to be restored.

Why does my blower motor keep burning up?

Improper rotation of the fan blade. With the fan blade spinning in the wrong direction the motor will not load and it will burn up over time.

What are the signs of a bad blower motor relay?

Symptoms of a Bad or Failing Blower Motor Relay

What are the signs of a bad blower motor?

Signs That Your Car's Blower Motor Is Going Bad

Is there a way to test a blower motor resistor?

Place one lead of the Ohmmeter on terminal 1 of the resistor. Place the other lead on terminal 2 and check against specifications. ... Move the lead from terminal 2 to terminal 3 and check this reading against specifications. If this circuit is open, showing infinity on the Ohmmeter, the blower resistor must be replaced.

How do you bypass a cooling fan resistor?

The resistor just gives you the low speed fan. You can simply bypass by unplugging the two wires connected to it and connect those together. The result will be that when the low speed fan is called, you will get the full speed fan.

Can you bypass the resistor?

A wire in the left circuit is shorting the 100Ω resistor. All current will bypass the resistor and travel through the short. So typically the assumption of a short is done by redrawing the circuit. ...

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

The average cost for blower motor resistor replacement is between $114 and $125. Labor costs are estimated between $44 and $55 while parts are priced at $70. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.

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.

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