Blower Motor Fan Resistor

What does the blower motor resistor do.

Blower motor fan resistor.

Get it as soon as thu sep 24. A sure fix requires trusted parts. When you turn a knob to produce more air flow for heat or cool air the resistor adjusts the electrical resistance to control the power sent to your blower motor. Blower works on all settings.

When fan speed is changed via the knob on the instrument cluster the blower motor resistor changes setting which changes the speed of the blower motor. Symptoms of a bad blower fan motor resistor in this video we will explain the symptoms of a bad blower motor resistor. If you have faulty blower motor resist. When it fails usually due to corrosion or overheating you may notice a few things.

The blower motor resistor is a single part often with several possible pathways for current flow that provide more or less resistance depending on the demand from the dash setting. Another indicator that you need a new blower motor resistor is an inability to use all of your available blower settings. If your blower is stuck on a single setting or has some settings on which it is non operational that means your blower motor resistor may be broken. Air flows but only at high speeds and other settings no longer work.

Your vehicle s blower motor resistor controls the speed of your blower motor. The motor that runs the fan in the heating and air conditioning system in a car is called a blower motor. 4 5 out of 5 stars 69. 40 cheaper than advanced auto.

This means that the current running through the blower motor and thus is speed is controlled by the resistor value. The blower motor resistor is an electrical component that is a part of the vehicle s heating and air conditioning system. Since the blower motor and resistor are working almost constantly it can wear out over time. It accomplishes this by regulating the electric current that powers the motor.

It is responsible for controlling the blower motor s fan speed. It s located inside the dash often on the opposite side of the steering wheel or inside the engine compartment on the firewall. Hvac fan blower motor resistor replacement for 1994 2008 dodge ram 1500 2500 3500 pickup 1993 1999 grand cherokee replaces ru109 973020 4720278 68004241aa 68004539aa 5012212aa hvac fan resistor. The user chooses a suitable fan speed by using a selector to connect one of the resistors in the blower resistor pack.

A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor.