Oxygen Sensor: Service and Repair

*** UPDATED BY TSB# ENG023, DECEMBER, 1990 ***

CAUTION: Rust penetrant such as WD-40 can contaminate the oxygen sensor and affect vehicle emissions. If rust penetrant must be used to remove the oxygen sensor, the sensor must be discarded.

When using a silicone based sealant during engine repair or rebuild, use only those approved for use on oxygen sensor equipped vehicles.





Removal:

1. Disconnect the harness terminal.
2. Remove the sensor with a suitable socket or wrench.

Oxygen Sensor:

Installation:
1. Apply a thin coating of anti-seize compound to the threads.

CAUTION: Do not contaminate the sensor tip with sealing compound.

2. Install the sensor and torque to 40 - 50 Nm (29 - 36 ft lb).
3. Apply a thin coating of dielectric compound to the connector.
4. Connect harness terminal.