Rear

EGO Sensor Wrench:

SPECIAL TOOL(S)

REMOVAL
1. Disconnect the battery ground cable.
2. Raise and support the vehicle.







3. Disconnect the Heated Oxygen Sensor (HO2S) electrical connector.







4. Using the special tool, remove the HO2S.

INSTALLATION
1. To install, reverse the removal procedure.
^ Apply a light coat of High Temperature Nickel Anti-Seize Lubricant F6AZ-9L494-AA or equivalent meeting Ford specification ESE-M12A4-A to the threads of the heated oxygen sensors.