Front Oxygen (A/F) Sensor

Front Oxygen (A/F) Sensor

REMOVAL

1. Disconnect the ground cable from battery.






2. Disconnect the connector from the front oxygen (A/F) sensor, and remove the clip (A) holding the return hose and front oxygen (A/F) sensor harness.






3. Remove the clips (A) holding the front oxygen (A/F) sensor harness to the engine harness stay.






4. Lift up the vehicle.
5. Remove the under cover.
6. Apply spray-type lubricant to the threaded portion of front oxygen (A/F) sensor, and leave it for one minute or more.
7. Remove the front oxygen (A/F) sensor.

CAUTION: When removing the front oxygen (A/F) sensor, wait until exhaust pipe cools, otherwise it will damage the exhaust pipe.






INSTALLATION

CAUTION: If lubricant is spilt onto the exhaust pipe, wipe it off completely with cloth to avoid emission of smoke or causing a fire.

1. Before installing front oxygen (A/F) sensor, apply anti-seize compound only to the threaded portion of front oxygen (A/F) sensor to make the next removal easier.

CAUTION: Never apply anti-seize compound to the protector of front oxygen (A/F) sensor.

Anti-seize compound: NEVER-SEEZ NSN, JET LUBE SS-30 or equivalent

2. Install the front oxygen (A/F) sensor.

Tightening torque: 30 N.m (3.1 kgf-m, 22.1 ft-lb)






3. Install the under cover.
4. Lower the vehicle.
5. Secure the front oxygen (A/F) sensor harness to the engine harness stay using the clips (A).






6. Connect the connector to the front oxygen (A/F) sensor, and secure the return hose and front oxygen (A/F) sensor harness using the clip (A).






7. Connect the battery ground terminal.