How to Replace Blower Motor Resistor?
1 DIY Job Related to the Blower Motor Resistor
While you’re under the hood working around the HVAC housing, here are some related tasks you should complete for preventative maintenance or to avoid future HVAC system problems.
Take out and clean the blower motor fan.
Replace the cabin air filter.
6.2 Details of Replacing Blower Motor Resistor
The following are the simple steps to replacing a blower motor resistor:
1. Locate the Blower Motor Resistor
Obviously, the first thing you had better do is locate the blower motor resistor so that you determine which component will be taken out. It is directly next to the blower motor. The latter, on the other hand, is commonly found underneath the passenger side dash or in the engine compartment.
2. Take out the Blower Motor Resistor
Remove the blower motor resistor now that you know where it is. To begin, remove the components surrounding the blower motor resistor, including the pigtail connected to the AC and the blower motor cooling duct. You can now easily access the blower motor resistor at this point.
All that remains is to unscrew the bolts that hold the blower motor resistor in place. Using a ratchet with a short extension, tighten the screw. Once the bolts are taken out, all that remains is to remove the blower motor resistor.
3. Disconnect the Wires
After removing the blower motor resistor, cut the wires that connect to the component. Cut the wires with a stripper or scissors designed for cutting through wires.
4. Install the New Blower Resistor
Apply dielectric grease to the housing of the blower motor resistor before proceeding with the installation. It will keep water out of the vehicle, which is a common issue when driving off-road. Apply a coating around the plastic to create a seal that will protect the component.
Replace the blower motor resistor in the same location where it was previously removed. Replace the screws to secure them in place. Connect the pigtail when you are finished with the job. However, there are some cases in which the pigtail has already worn out. Proceed to the next step if this is the case.
Disconnect the old wires and reconnect the new ones. Because the wires are probably color-coded, this should be simple. Connect the new wires with the connectors. Return the pigtail to its original position, and you fulfill the task.