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.
Where is the blower motor resistor located at?
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 do I know if my blower motor resistor is bad or blower motor?
- Fan does not work at all, so no air comes out of the vents.
- Fan only works on some speeds and not others.
- Fan only works on the highest speed.
- Fan runs all the time and can't be controlled with the fan switch.
- You see smoke coming out of the vents.
What happens when a 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.
How do you test a blower motor resistor on a Jeep?
Place one lead of the Ohmmeter on terminal 1 of
the resistor. Place the other lead on terminal 2 and check against specifications. If this circuit is open, showing infinity on the Ohmmeter, the blower resistor must be replaced. Move the lead from terminal 2 to terminal 3 and check this reading against specifications.
How much does it cost to fix a blower motor resistor?
The average cost for a Blower Motor Resistor Replacement is
between $108 and $137
but can vary from car to car.
What are the signs of a bad blower motor relay?
If you have a faulty blower motor,
you may experience low airflow from the vents
, even when the fan is on high. There will be no air coming from the vents if your fan isn't working due to a bad blower motor resistor.
How do you diagnose a bad blower motor?
You might also hear
ongoing whirring noises, or noises that change or get louder if you increase the fan speed
. These are all signs of problems with the blower motor. In some cases, you may even notice smoke or smells of burning while driving, in which case you should pull over immediately.
Can you fix a blower motor resistor?
The resistor module is easy and inexpensive to replace. It's then typically installed in the ductwork, near the car blower—either under the dash or under the hood. (Refer to a service manual to locate yours.) Purchase a new resistor module at the auto parts store (usually less than $25).
What can cause a blower motor to stop 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.
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.
What does a bad blower motor sound like?
You might hear this as a noise coming from directly behind the vent, perhaps
a light slapping
, or a sudden pop before you notice a problem with airflow. Whirring noises might also result from a bad bearing in the motor. … This is a telltale sign of a bad blower motor.
How do you replace a blower motor resistor?
- Remove the negative battery terminal. …
- Locate the blower motor resistor on the passenger side under the dash board. …
- Disconnect the electrical connector to the blower motor resistor.
- Remove the screws or bolts to the blower motor resistor and remove the resistor.
How do you test a blower motor relay?
Connect a test light or multimeter to
the ground (black lead). Turn the ignition key to the on position (engine off), and remove the relay. Using the probe, test all terminal sockets in the relay connector. Two of the four should have power.
What does a resistor do on a cooling fan?
The cooling fan resistor is meant
to send power to the fans in steps
, so that the fans may operate at different speeds. If any of the individual steps or switches fail, it will disable the cooling fans from operating on that speed setting.
