How much does a blower motor resistor cost?
How much does a blower motor resistor cost?
Depending on the manufacturer and model, a blower motor resistor can go anywhere between $3 and $335 on CarParts.com. The replacement parts come in individual units, sets of two resistors, or as part of a blower motor resistor kit.
What are the symptoms of a failed blower motor resistor?
Blower motor resistor problems. Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at high speed and doesn’t work at low speeds.
What kind of resistor does a blower fan use?
The newer style of blower resistor uses electronics to send small pulses to the blower motor and based on how frequent the pulses are can speed up and slow down the blower fan. Blower motors can be fairly cheap if they are a manual resistor block style.
Can a broken motor switch stop a blower?
A broken blower motor switch can also stop the blower from changing to certain speed settings. If your blower motor cannot change to certain speeds, check both the resistor and the switch on your dashboard. The most common failure points are the resistor and the motor itself.
What kind of blower motor resistor do I Need?
FIT THE FOLLOWING VEHICLE – Blower Motor Resistor compatible with Ford Expedition F-150 & Lincoln Navigator with Auto Temp Control, including 2009-2017 Ford Expedition | 2009-2014 Ford F-150 | 2009-2017 Lincoln Navigator, please check the fitment in the product description below.
A broken blower motor switch can also stop the blower from changing to certain speed settings. If your blower motor cannot change to certain speeds, check both the resistor and the switch on your dashboard. The most common failure points are the resistor and the motor itself.
What’s the highest speed a blower motor can go?
On most vehicles, the highest blower motor speed setting bypasses the blower motor resistor to give the fan full vehicle voltage (typically between 12 and 14.4 volts). If the blower motor still works on high, but will not work on any other speed, it usually points to a bad blower motor…
Why does the resistor on my air blower wear out?
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. Since the blower motor and resistor are working almost constantly, it can wear out over time.
Depending on the manufacturer and model, a blower motor resistor can go anywhere between $3 and $335 on CarParts.com. The replacement parts come in individual units, sets of two resistors, or as part of a blower motor resistor kit.
How does a blower motor resistor control the fan speed?
The blower motor resistor controls the fan speed of the blower motor and the resulting change in air pressure produced by the movement of the blower fan. It accomplishes this by regulating the electric current that powers the motor.
How can I tell if my blower motor resistor is bad?
A repair manual can tell you where its location is in your vehicle’s make and model. Inspect the resistor visually. Look for obvious signs of corrosion and burns from overheating.
Where is the blower motor in a HVAC unit?
The blower motor is a fan housed in the heating, ventilation and air conditioning (HVAC) ducts, normally located behind the glove box. It uses a resistor to change the speed at which the fan operates.
What causes a blower motor resistor to fail?
The most likely reasons for blower motor resistor failure can include: 1 Corrosion from long exposure to air and moisture. 2 Overheating—if a motor finds it harder to move because of jamming or worn bearings, it can raise the resistor’s temperatures to dangerous levels. 3 Normal wear due to time and use.
How does a relay work on a blower motor?
Finally, with the fan switch on the highest speed, the fan motor is receiving system voltage (14.5 with the engine running). Some systems will energize a relay when the switch is set at the highest fan speed. The relay then closes its contacts, feeding full voltage to the fan, because a relay can handle the current better than the fan switch.
What causes a blower motor resistor to wear out?
Since the blower motor and resistor are working almost constantly, it can wear out over time. If your blower motor only works on certain speeds or is stuck on one speed, you may have a problem with the blower motor resistor. O’Reilly Auto Parts has replacement blower motor resistors to fit most cars, trucks and SUVs.
How is the speed of the blower motor controlled?
On climate control systems without automatic temperature controls, the blower motor speeds are controlled by a switch wired to a stepped resistor that usually includes a thermal fuse.
