QuestionWe believe the blower motor sensor on our 300M 4.3L has gone out. We have a replacement but can not locate it on the vehicle. The blower remains on even when the ATC system is turned off. Can you help us locate the sensor, the manual we have doesn't show this engine?
Answeru got a blower motor resistor power module cost about 80 to 100 bucks? it is different ones if u have auto temp control or manual controls.
Both of them are located
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN AN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
Open hood and disconnect the negative battery cable remote terminal from the remote battery post(Refer to 8 - ELECTRICAL/BATTERY SYSTEM/CABLES - REMOVAL).
Remove lower right underpanel silencer/duct.
Disconnect wiring connector to the power module.
Remove the power module retaining screws.
Pull the power module out of HVAC housing.