Log In
Search suggestions

    My Vehicles

    1979 Lincoln Mark V 6.6L 2BL OHV 8cyl

    My Store

    1720 S RIDGEWOOD A
    (386) 427-1210

    CLOSED Open at 7:30 AM

    GET A $25 GIFT CARD FOR EVERY $100 SPENT ON ONLINE SHIP-TO-HOME ORDERS.

    Use Code: GIFTME

    See Details

    Ford Crown Victoria, Mercury Grand Marquis, Marauder, Lincoln Town Car 1999-2005

    Wheel Speed Sensors

    Print

    Removal & Installation



    Front

    CAUTION
    The electrical power to the air suspension system must be turned off prior to hoisting, jacking or towing an air suspension vehicle. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.


    WARNING
    The front wheel speed sensor acts as a wheel bearing seal. Do not operate the vehicle without the front wheel speed sensor installed.

    1. Before servicing the vehicle, refer to the Precautions section.
    2.  
    3. Raise and support the vehicle.
    4.  
    5. Disconnect the front anti-lock brake sensor electrical connector.
    6.  
    7. Disconnect the routing clips.
    8.  
    9. Clean the area around the front wheel speed sensor of all dirt and foreign material before removal.
    10.  
    11. Remove the front anti-lock brake sensor as follows:
      NOTE
      If the front wheel speed sensor wire clips are damaged, repair kit 2C577 is available.



      Push the tabs inward using a flat-blade screwdriver.
       
      Pry the sensor out of its housing.
       



      Click image to see an enlarged view

      Fig. Removal of speed sensor from housing

    12.  

    To install:


    WARNING
    Be sure to remove all dirt and foreign material from the area before installation.

    1. Press the sensor into its housing until it clicks in place.
    2.  
    3. Reattach the harness routing clips and ABS sensor electrical connector
    4.  



    Click image to see an enlarged view

    Fig. The speed sensor sits directly over the exciter ring in the front knuckle



    Click image to see an enlarged view

    Fig. Detach the speed sensor connector in the engine compartment



    Click image to see an enlarged view

    Fig. Remove the speed sensor harness from the routing clips



    Click image to see an enlarged view

    Fig. A special E6 Torx® socket is required to remove the speed sensor-retaining bolt



    Click image to see an enlarged view

    Fig. The sensor sits in a special mounting boss that does not allow an adjustable air gap between the sensor and exciter ring

    1. Disconnect the negative battery cable.
    2.  
    3. From inside engine compartment, detach sensor assembly 2-pin connector from the wiring harness.
    4.  
    5. Remove the steel routing clip attaching the sensor wire to the tube bundle on the left sensor or remove the plastic routing clip attaching the sensor wire to the frame on the right sensor.
    6.  
    7. Remove the rubber coated spring steel clip holding the sensor wire to the frame.
    8.  
    9. Remove the sensor wire from the steel routing clip on the frame and from the dust shield.
    10.  
    11. Remove the sensor attaching bolt from the front spindle and slide the sensor out of the mounting hole.
    12.  

    To install:

    1. Install the sensor into the mounting hole in the front spindle and attach with the mounting bolt. Torque to 40-60 inch lbs. (4.5-6.8 Nm).
    2.  
    3. Insert the sensor routing grommets into the dust shield and steel bracket on the frame. Route the wire into the engine compartment.
    4.  
    5. Install the rubber coated steel clip that holds the sensor wire to the frame into the hole in the frame.
    6.  
    7. Install the steel clip that holds sensor wire to tube bundle on left side or plastic clip that holds sensor to frame on right side.
    8.  
    9. Reconnect the 2-pin connector to wire harness. Reconnect the negative battery cable.
    10.  

    Rear

    CAUTION
    The electrical power to the air suspension system must be turned off prior to hoisting, jacking or towing an air suspension vehicle. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.

    1. Before servicing the vehicle, refer to the Precautions section.
    2.  
    3. Remove rear seat bottom.
    4.  
    5. Disconnect the rear anti-lock brake sensor electrical connector.
    6.  
    7. Push the sensor harness grommet through the passenger compartment floor.
    8.  
    9. Disconnect the routing clips.
    10.  
    11. Remove the rear anti-lock brake sensor as follows:

      Remove the bolt.
       
      Remove the sensor.

      Click image to see an enlarged view

      Fig. ABS sensor routing into passenger compartment



      Click image to see an enlarged view

      Fig. ABS sensor in housing

       

    12.  

    To install:

    1. Insert the sensor into its housing and torque the bolt to 64 inch lbs. (7 Nm)
    2.  
    3. Route the sensor harness into the passenger compartment and snap the grommet in place.
    4.  
    5. Reattach the routing clips.
    6.  
    7. Attach the sensor electrical connector.
    8.  
    9. Install the rear seat cushion.
    10.  



    Click image to see an enlarged view

    Fig. Detach the speed sensor connector in the luggage compartment



    Click image to see an enlarged view

    Fig. Grasp the harness and . . .



    Click image to see an enlarged view

    Fig. . . . remove it from the routing brackets



    Click image to see an enlarged view

    Fig. The rear speed sensor is mounted on the back of the hub assembly



    Click image to see an enlarged view

    Fig. Remove the sensor retaining bolt and remove the sensor from the hub



    Click image to see an enlarged view

    Fig. The sensor is bolted through the back of the plate on the rear wheels, and is held in place by an external Torx®head bolt. The same as the front



    Click image to see an enlarged view

    Fig. When the head comes through the backing plate it mounts next to the exciter ring

    1. Disconnect the negative battery cable.
    2.  
    3. From inside luggage compartment, detach 2-pin sensor connector from wiring harness and push sensor wire through hole in floor.
    4.  
    5. From below vehicle, remove sensor wire from routing bracket located on top of rear axle carrier housing and remove steel clip holding sensor wire and brake tube against axle housing.
    6.  
    7. Remove screw from clip holding sensor wire and brake tube to bracket on axle.
    8.  
    9. Remove sensor to rear adapter retaining bolt and remove sensor.
    10.  

    To install:

    1. Insert sensor adapter and install retaining bolt. Torque to 40-60 inch lbs. (4.5-6.8 Nm).
    2.  
    3. Attach clip holding sensor and brake tube to bracket on axle housing and secure with screw. Torque to 40-60 inch lbs. (4.5-6.8 Nm).
    4.  
    5. Install steel clip around axle tube that holds sensor wire and brake tube against axle tube and push spool-shaped grommet into clip located on top of axle carrier housing.
    6.  
    7. Push sensor wire connector up through hole in floor and seat large round grommet into hole.
    8.  
    9. Push sensor wire connector up through hole in floor and seat large round grommet into hole.
    10.  
    11. Reconnect sensor 2-pin connector to wiring harness inside luggage compartment.
    12.  

     
    AutoZone Logo