A: If your vehicle has an automatic temperature control, it has a Blower Motor Power Module instead of a blower motor resistor. If the blower motor itself is OK, and you get battery power and ground at the Blower Motor Power Module, this module is fairly common to fail.
A: The common reason for the blower motor resistor to fail prematurely is when the blower motor itself draws too much current. Sometimes it happens because something jams the fan blade or when the motor itself starts going bad.
It is a common concern of ford crown victoria owners to state somethingto the effect of "my blower motor only works good on the high speed".In which case, the blower motor might not spin on any speed other thanhigh. Or the blower motor might spin on speeds other than high, butturn rather slowly and move minimal amounts of air. The most likelyculprits here are the blower resistor under the hood and it'sassociatedelectrical wiring pigtail.
Remove blower motor resistor from blower motor. Install blower motor resistor in reverse order of removing. Be sure electrical connectors are properly engaged, listen for audible click.
|97M3||Comments: Im quite unclear on this. So car with Auto AC have both the Blower Resistor and Final Stage? My blower wont work at any fan setting. Which one i need to replace? Thanks|
|July 11, 2010|
|Followup from the Pelican Staff: I would pull the blower motor and apply 12 volts to it to test to see if the actual unit is still good or not. - Wayne at Pelican Parts|