Front Oxygen (A/F) Sensor

Front Oxygen (A/F) Sensor

REMOVAL
1. Disconnect the ground cable from battery.






2. Remove the radiator sub fan.
3. Lift up the vehicle.
4. Remove the under cover.
5. Disconnect the front oxygen (A/F) sensor connector, and remove the clip holding the front oxygen (A/F) sensor harness.






6. Lower the vehicle.
7. Apply spray-type lubricant to the threaded portion of front oxygen (A/F) sensor, and leave it for one minute or more.
8. 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 over the exhaust pipe, wipe it off 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.

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

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

Tightening torque: 21 N.m (2.1 kgf-m, 15.5 ft-lb)






3. Lift up the vehicle.
4. Connect the front oxygen (A/F) sensor connector, and secure the front oxygen (A/F) sensor harness by using the clip.






5. Install the under cover.
6. Lower the vehicle.
7. Install the radiator sub fan.
8. Connect the battery ground terminal.