OEM Mercury Grand Marquis Speed Sensor

Mercury Grand Marquis Speed Sensor Parts and Q&A

• Vehicle Speed Sensor
  6L3Z-7H103-AA
  Q: How to Address Issues with the Rear Speed Sensor on a Mercury Grand Marquis?

  A:

  Before accessing the wheel speed sensor of the rear wheel users must deactivate the fire suppression system if present followed by unscrewing the rear Seat Cushion. First disconnect the electrical connector from the rear wheel speed sensor before pushing the sensor harness grommet into the opening of the passenger compartment floor. The service of a vehicle with Air Suspension requires power disconnection before any lift or towing operation to stop unexpected air spring pressure changes which could cause shifting and lead to injuries; vehicles with this system should use the off position on the air suspension service switch. Place the vehicle at neutral and position it onto the hoist for support. Separate the wheel speed sensor harness connectors after which you should unfasten the rear wheel speed sensor bolt and sensor before reinstalling the new sensor with a torque setting of 7 Nm (62 inch lbs.). Before continuing with use you should power up fire suppression systems and adjust the air suspension service switch to on if your vehicle is so equipped.
• Speed Sensor
  E9LZ-9E731-A
  Q: How to Service and Repair a Speed Sensor, Specifically the Output Shaft Speed (OSS) and Turbine Shaft Speed (TSS) Sensors on Mercury Grand Marquis?

  A:

  Service or repair operations on the Transmission Speed Sensor begin with hoisting the vehicle while stationing the transmission in neutral position. First disconnect the electrical connector from the OSS or TSS sensor before removing the bolt that secures the sensor then taking out the sensor unit. The OSS sensor service includes removing bolt (4) followed by the sensor (3); while the TSS sensor service begins with bolt (2) removal followed by sensor (1). The installation should end by performing the procedure in reverse order to installation.