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How to Change a Blower Motor Resistor in Vehicles

by Contributing Writer; Updated June 12, 2017

A blower motor resister in a Vehicles works in conjunction with the heater control panel fan switch to control the speeds of the fan. Blower motor resisters come in two styles depending on the year of the Vehicles although they are both located in the same place. There is the older style which uses a multiple set of resistance wires formed in loops each with a different resistance or voltage output. The newer style is an integrated circuit board. Before a blower motor resister is replaced, a check of all other electrical circuits should be made first since they can cause the same type problems, preventing the fan from working. Check the fuses Vehicles the blower fan. These are usually located in the fuse block inside the car on the driver's side. Also check the blower motor relay Vehicles operation.

Under The Hood:

 How to Change a Blower Motor Resistor in a Taurus

Remove the bottom cover of the Taurus' dash under the glove compartment using a 7mm socket and ratchet. Pull the carpet back from the firewall straight under the glove compartment to give more clearance to get your hands in underneath the blower motor resister.

Remove the electrical connector on the Taurus' blower motor resister. The electrical connector is located to the left and just behind the blower motor. It is inserted straight up and is on an approximately 1½ by 3-inch flat hardboard plate. It is held in with two or four screws depending on year of vehicle you are working on.

Remove the blower motor resister. Pay close attention to the way the old blower motor resistor came out. Insert the new blower motor resister in the same way the other came out and tighten screws.

Install the electrical wire connector. Install the under-dash panel that was removed under the glove compartment and install the 7mm screws.

Items you will need

  • Set of ¼-inch sockets

  • ¼-inch ratchet

  • ¼-inch short extension

  • Phillips screwdriver

 How to Change the Blower Motor Resistor on a 1997 Honda Accord

Park the Accord on a level surface and set the parking brake. If the Accord has a stereo system with a lock-out code, make sure you know the code. The code is provided on a card in the owner's manual. Alternatively, you can purchase the code from radio-code.com by providing the serial number for the radio. The code is delivered by email. Disconnect the negative battery cable with a ratchet and socket.

Open the glove box. Remove the screw from the door damper with a Phillips screwdriver. Remove the two screws from the bottom of the glove box, under the door, with a Phillips screwdriver. Remove the glove box.

Locate the blower motor resistor. With the glove box removed, you will see it mounted face down on the right side of the blower housing. The electrical connector plugs into the center of the resistor and points straight down. Disconnect the electrical connector. Remove the two Phillips screws that attach the resistor to the blower housing. Lift the resistor straight up and remove it.

Mount a new resistor, install and tighten the screws. Plug in the electrical connector. Install the glove box. Install and tighten the two screws in the bottom of the glove box. Attach the damper to the glove box door, install and tighten the screw. Connect the negative battery cable. Enter the stereo code if applicable.

Items you will need

  • Ratchet and socket set

  • Phillips screwdriver

 How to Change a Blower Motor Resistor on a 2006 Colorado

Removal

Park the Colorado on a level surface and set the parking brake.

Disconnect the negative battery cable with a wrench.

Move to the passenger compartment. Pull up the door sill from the bottom of the door. It is held in with tabs and clips. No tools are needed.

Pull the plastic panel from the bottom of the dash. It is also held with tabs and clips. Confirm that you see the blower motor and resistor. The resistor is just to the left of the blower motor. It has a connector with four wires on it.

Pull the connector from the resistor. Use a nut driver to remove the two hex-head screws from the resistor. Remove the resistor.

Installation

Slide a new resistor into place. Install and tighten the screws.

Plug in the electrical connector.

Snap the bottom panel into place. Snap the door sill into place.

Reconnect the negative battery cable.

Items you will need

  • Nut driver set

About the Author

This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Runs, contact us.

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