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Umpaw
Umpaw 5/19/2011
2004 Mercury Grand Marquis LS 8Cyl4.6L - 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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