For 1990-2009 cars

#### Tools Required

J 39194-C Oxygen Sensor Wrench

### Removal Procedure

1. Raise the vehicle on a hoist. Refer to Lifting and Jacking the Vehicle .

Important: Do not apply grease or silicon products to the heated oxygen sensor (HO2S) 2. Do not alter the wiring in any way. The wires carry air reference to the sensor.

2. Remove the HO2S wiring harness from the heat shield.
3. Disconnect the HO2S electrical connector.
4. Remove the HO2S using the J 39194-C .

### Installation Procedure

1. Apply a small amount of anti-seize compound SA P/N 21485279, or equivalent, to the threads of the heated sensor 2.
2. Install the HO2S using the J 39194-C .

Tighten
Tighten the oxygen sensor (lower exhaust pipe) to 45 N·m (33 lb ft).

3. Connect the HO2S connector. Make sure the locking tab is in the full closed position.
4. Lower the vehicle.
5. Start the engine and make sure no exhaust leaks exist.