Lincoln Navigator: Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS) / Catalyst Monitor Sensor. Removal and Installation

Special Tool(s) / General Equipment

303-476 (T94P-9472-A) Socket, Exhaust Gas Oxygen Sensor TKIT-1994-LM/M TKIT-1994-F TKIT-1994-FLM/FM

Materials

Removal

All sensors

1. With the vehicle in NEUTRAL, position it on a hoist.
   Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation).
   

1. If equipped, remove the underbody shield.
   

Right hand (RH) Catalyst monitor sensor

1. • Disconnect the electrical connector.
     
   • Apply penetrating oil to sensor, using the special tool remove the Catalyst monitor sensor.
     Use Special Service Tool: 303-476 (T94P-9472-A)  Socket, Exhaust Gas Oxygen Sensor.
     Material: Motorcraft® Penetrating and Lock Lubricant / XL-1

Left hand (LH) Catalyst monitor sensor

1. Disconnect the electrical connector and harness retainers. Apply penetrating oil to sensor, using the special tool remove the Catalyst monitor sensor.
   Use Special Service Tool: 303-476 (T94P-9472-A)  Socket, Exhaust Gas Oxygen Sensor.
   Material: Motorcraft® Penetrating and Lock Lubricant / XL-1

Installation

Left hand (LH) Catalyst monitor sensor

1. • Apply anti-seize to thread of sensor, using special tool install the Catalyst monitor sensor.
     Use Special Service Tool: 303-476 (T94P-9472-A)  Socket, Exhaust Gas Oxygen Sensor.
     Material: Motorcraft® High Temperature Nickel Anti-Seize Lubricant / XL-2
     Torque: 35 lb.ft (48 Nm)
   • Connect the electrical connector and harness retainers.
     

Right hand (RH) Catalyst monitor sensor

1. • Apply anti-seize to thread of sensor, using special tool install the Catalyst monitor sensor.
     Use Special Service Tool: 303-476 (T94P-9472-A)  Socket, Exhaust Gas Oxygen Sensor.
     Material: Motorcraft® High Temperature Nickel Anti-Seize Lubricant / XL-2
     Torque: 35 lb.ft (48 Nm)
   • Connect the electrical connector and harness retainers.
     

All sensors

1. If equipped, install the underbody shield.
   Torque: 71 lb.in (8 Nm)