For 1990-2009 cars

### Removal Procedure

Caution: Refer to Safety Glasses Caution in the Preface section.

Caution: Refer to Vehicle Lifting Caution in the Preface section.

1. Ignition Off.
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
3. Remove the HO2S electrical connector from the wiring harness bracket (1).

Notice: Refer to Heated Oxygen and Oxygen Sensor Notice in the Preface section.

4. Disconnect the heated oxygen sensor (HO2S) electrical connector (2).
5. Remove the HO2S (1) from the catalytic converter.

### Installation Procedure

Notice: Refer to Component Fastener Tightening Notice in the Preface section.

Important: New oxygen sensors should have a special anti-seize compound already applied to the sensor threads. If you are installing the original sensor, apply an approved compound to the sensor threads.

1. Install the HO2S (1) to the catalytic converter.

Tighten
Tighten the HO2S to 40 N·m (30 lb ft).

2. Connect the HO2S electrical connector (2) to the harness connector.
3. Install the HO2S electrical connector to the wiring harness bracket (1).
4. Lower the vehicle.