2005 Mercury Grand Marquis Q&A
2005 Mercury Grand Marquis Question: AC AND HEATER FAN NOT WORKING
DOES NOT WORK ON AC OR HEAT - Visitor
Most likely it is the blower resistor. I have a 2005 Grand Marquis, the resistor has went out twice. It is recommended not to run the fan on the lowest speed as the fan is used to cool the resistor. - Visitor
the Ac compresser doesn't come on when button is pushed the blower fan works high and low.tempeture works high and low but the blower air only comes through dash vents not on the floor or defrost ...