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Umpaw

Umpaw 5/19/2011

2004 Mercury Grand Marquis LS 8 Cyl 4.6L

Body & Interior

Exactly where is the blower motor resister block located on the 04 Grand Marquis?

4 Answers


Spoon Sports

Spoon Sports 5/19/2011

Located in the engine compartment passenger side firewall looks like a black box with two heater hoses coming out of it, Follow the wires and it will look like a snail about 6 to 8 inchs across.

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HouseCallAuto

HouseCallAuto 5/19/2011

Depending on the type of heating / ac option, this may not be a blower resistor, it may be a Blower Motor Speed Controller.

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HouseCallAuto

Umpaw 5/20/2011

I have auto temp control, so where would the Blower Motor Speed Controller be located. I can get the blower to run on high speed only if I jump the negative side of the blower power plug to ground, so I am assuming the the speed controller is bad.

HouseCallAuto

HouseCallAuto 5/20/2011

The blower motor speed controller is in the same place as the blower resistor would be. Engine compartment - firewall, toward the middle, electrical connector.

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HouseCallAuto

Umpaw 5/21/2011

Thanks, I finally found it and by removing the heater hose I got it out. I found that the ground had a failed solder joint and re-soldered it and everything works properly now.

Spoon Sports

Spoon Sports 5/26/2011

Great Job Chief, Congratulations

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