How do you replace a 1999 mountaineer motor blower resistor?

Answer 1

The blower resistor is typically the problem with manual HVAC when the blower switch only operates at the high setting (4). This is because the three (slower) settings go through this resistor pack to slow down the blower motor. First find the blower motor. It is on the passenger side of the engine compartment attached to the firewall and you can easily confirm it by simply turning on the blower to full and listening when the engine is not running. If you are facing the blower motor pretend it is a clock face. Look down at the 5 o'clock position below the blower motor and you will see a 3x1" resistor module that is attached with two 8mm screws. The resistors themselves are not visible because they are on the inside where they can be cooled by the blower air. There is an electrical plug attached to it. The screws are not very easy to reach, so you might want to have a universal coupling for your wrachet to give you an angle. So just unclip the electrical plug, unscrew the two screws, remove/replace with the new blower resistor and reconnect the electrical plug. If that doesn't fix the problem, you probably have to check for connectivity at the electrical plug attached to the blower resistor you just installed.