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2001 bmw 330i blower motor resistor replacement?

What are the signs of a bad blower motor resistor?

What are the symptoms of a bad blower motor resistor?

  • No Air.
  • High speeds only.
  • Low speed only.
  • Fan won’t turn off.
  • Blower motor works on some settings but not others.
  • Smoking vents.
  • Burning smell.

Can you drive without a blower motor resistor?

except blower motor resistors don’t “wear out”; they stop working altogether, suddenly, when the resistance wire inside burns through. Even then, it’s safe to drive the car provided that it has no exhaust leaks which might permit carbon monoxide or oxides of nitrogen to enter the passenger compartment.

Is my blower motor or resistor bad?

If you have faulty blower motor resistor you may experience low airflow coming from the vents even when the fan is all the way on high. In some cases bad blower motor resistor may not even turn the blower motor fan as a result your fan will not work at all and there will be no air coming from the vents.

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How do I remove the blower motor resistor?

Difficulty

  1. Remove the negative battery terminal.
  2. Locate the blower motor resistor on the passenger side under the dash board.
  3. Disconnect the electrical connector to the blower motor resistor.
  4. Remove the screws or bolts to the blower motor resistor and remove the resistor.
  5. Installation is the reverse of the removal.

What causes a blower motor resistor to go 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.

What causes a blower motor resistor to burn out?

Trent, one of the biggest reasons for blower motor resistors to have shorten life is actually because of faulty blower motor drawing too many amps, some times melting wires/plugs, heating up resistors shortening their life. Then they buy a aftermarket blower motor and again it keeps burning up.

How much does it cost to replace a 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.

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

This is around a 4 hour job by an experienced Tech.

Can you drive with a bad blower motor?

A bad heater blower motor will not affect the safety of your car, with the possible exception of you not being able to clear the windshield of snow, ice, or condensation if the defrosters don’t work. But you won’t be comfortable inside your car, especially during the cold of winter and the heat of summer.

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

Blower Motor Resistor Replacement Cost – RepairPal Estimate. The average cost for blower motor resistor replacement is between $115 and $141. Labor costs are estimated between $47 and $59 while parts are priced between $68 and $82. This range does not include taxes and fees, and does not factor in your unique location.

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.

Why is my blower motor not 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 long does it take to replace a blower motor resistor?

takes about 45 minutes.

Is there a fuse for blower motor?

If the fan doesn’t work, before pointing the finger at the blower motor, check fuses for the motor to make sure they’re still good. Many vehicles have two fuses for the blower motor, one in the interior fuse block and the other under the hood. The blower motor is usually under the dashboard on the passenger side.

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What does a AC blower resistor do?

Blower resistors are resistors which are used to control the fan speed of automotive blowers. The fan speed can be changed either by switching the blower resistor resistance mechanically, using a rotating lever, or electronically by the air conditioning system.

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