How do you remove a blower motor resistor?

How do you 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.

How do you change a resistor?

Instead of ordering and wanting for a resistor with a value you need you can change the resistance of a resistor by using another resistor or many. By installing resistors in a parallel or series circuit you can change the value in Ohms.

Will a blower motor work without the resistor?

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.

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Where is the blower resistor located?

It’s located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall. A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor.

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

As we can see, the blower motor resistor costs between $150 and $400 and can usually be completed in about an hour to an hour and a half. These repairs are fairly simple and usually on the cheaper side for most common vehicles.

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

takes about 45 minutes.

What happens if I use the wrong resistor?

We often sense AC currents with a current transformer. We need to turn the resultant current signal into a voltage signal (for A-D conversion, typically,) by inserting a burden resistor. If you fit one of the wrong ohmic value that curtent-to-voltage conversion will be away, and the current indication wildly in error.

What can I use instead of a resistor?

Explained another way: an electrical circuit that has a difference of 2 volts, with 1 Ampere of current flowing through it, has a resistance of 2 Ohms. All electrically conductive materials are somewhat resistive, too. Because of this, even a good electrical conductor, such as metal wire, can be used as a resistor.

Is there a way to test a blower motor resistor?

If you want to do a quick test of the blower resistor, you can check the resistance of each of the resistors with a multimeter as follows: set the tool to read ohms (a measurement of resistance) and connect one of its probes to the common output terminal of the resistor.

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Can I bypass blower 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 are the signs of a bad blower motor relay?

If you have a faulty blower motor, you may experience low air flow from the vents even when the fan is on high. There will be no air coming from the vents if your fan is not turned on because of a bad blower motor Resistor.

What causes a blower motor resistor to burn 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 clean a blower motor resistor?

The connectors do burn there, and make poor contact. So dig it out and spray clean them with carb cleaner or whatever.

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.

Is there a fuse for the blower motor?

The blower motor is powered by a fuse-like device called a relay. If your heater or air conditioner does not blow air through the vents, this could indicate that the blower motor fuse has probably blown. While replacement is easy, the exact location of your blower motor fuse may vary from vehicle to vehicle.

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