Oxygen Sensor: Service and Repair

EGO Sensor Wrench:

Special Tools Recommended

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







3. Remove the two rear Heated Oxygen Sensors (HO2S).
1 Disconnect the connectors.
2 Use the Oxygen Sensor Wrench to remove the heated oxygen sensor.







4. Remove the two connectors from the front heated oxygen sensor.







5. Use the Oxygen Sensor Wrench to remove the front heated oxygen sensor.







INSTALLATION
1. Follow the removal procedure in reverse order.

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.