Question about 2003 Mercury Grand Marquis

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I have a 2003 mercury grand marquis and my blower motor does not work there is no voltage at blower motor plug checked fuse already and that is good and checked the relay they were both good

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Voltage comes from the actual a/c head,chek a wiring diagram to see which actual wire brings pwr down to ur blower . access by removing a/c head out to access backside connectors. another common problem overlooked is to to check ur blower resistors their located in the same area as ur blower motor. u have to access the two mounting bolts that hold it in. the pigtail/wires that connect to blwr mtr usually come from this resistor pak located in blwr hsg to help keep em cool.wat they do is vary the amount of ground going to blower mtr.wen u remove it a telltale sign that thir no good is severe rust buildup on the mounting plate or electrical module wrapped in sealant. good luk

Posted on Apr 27, 2011

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Posted on Jan 02, 2017

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My 2008 Mercury Grand Marquis does not blow air. You can adjust the temperature, and you will feel cold air (or warm air) but the fan doesn't work. My mechanic is saying we need a whole new in-dash...


first check fuse relay to blower motor and check see if blower motor working remove and hotwire it if yes control module bad if blower motor dont work its faulty.

Sep 16, 2013 | 2008 Mercury Grand Marquis

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Blower stopped working on my 2001 Mercury Grand marquis


Check the fuse first. If the fuse is good then either the blower motor or the blower motor resistor pack is defective. Check the blower motor by applying 12 volts directly to the motor. If it runs it is good and most likely the resistor pack is bad and needs replacing. it can also be the blower motor speed control but rarely do they go bad.

Jan 02, 2011 | 2000 Mercury Grand Marquis

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Air condition blower doesnt work in 2003 mercury grand marquis


Removal & Installation To Remove:
  1. Disengage the wire harness connectors from the retainer.
  2. Disconnect the blower motor electrical connector.
  3. Remove the hose.
  4. Remove the screws and remove the blower motor. CAUTION
    Clean any corrosion from the blower motor shaft before removing the fan.
  5. Remove the wheel from the blower motor.
To Install:
  1. Install the wheel on the blower motor shaft.
  2. Place the blower motor in the housing and install the screws.
  3. Connect the hose to the blower motor.
  4. Connect the electrical connector.
  5. Install the electrical connectors in the retainer.
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Jul 30, 2010 | 2003 Mercury Grand Marquis

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Blower fan not working for heat or AC. checked electrical on motor and it's OK. What else can I check?


check the blower motor resistor- located next to the blower motor- or check the fuses.

Nov 28, 2009 | 2003 Mercury Grand Marquis

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Blower fan stops on lower speeds 2000 grand marquis


There is a blower realy. Which steps the voltage up or down. If it fails it will run 12 volts or HIGH speed only... Replace that and your good.

Jun 28, 2009 | 1993 Mercury Grand Marquis

1 Answer

Blower motor not working


First check the fuse. If it's good, use a test light on your blower motor to see if power is present with the key on and fan switch on. If you have power there, then your blower motor is faulty. If there is no power, and the fuse is okay, it could be the switch.

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Needs a blower motor resistor if the fan only blows on one speed. It is located underneath the firewall on the outside, near where the passenger exhaust system is. You need to take the passenger side cat converter off to get to it.

Jun 02, 2009 | 2003 Mercury Grand Marquis

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