Tools Required

J 39194-C O2 Sensor Wrench

Notice: The HO2S uses a permanently attached pigtail and connector. This pigtail should not be removed from the HO2S. Damage or removal of the pigtail or connector could affect proper operation of the sensor.

1. Turn the ignition OFF.
2. Disconnect the HO2S-1 harness connector.
3. Remove the sensor harness and connector from the attachment clip.
4. Use a liquid penetrate before removing the sensor.

Notice: Removal of the sensor is easier if the exhaust system is slightly warmed up. Be careful that the exhaust is not hot to work on safely. Moving the sensor back and forth while applying penetrating oil to the threads will aid in removal and will decrease the chance of exhaust pipe thread damage.

5. Remove the H02S-1 using the J 39194-C , or equivalent.

Notice: Silicone based products will contaminate the HO2S. Use only a nickel based anti-seize compound that does not contain silicone.

1. Apply a small amount of anti-seize compound Saturn P/N 21485279, or equivalent, to the threads of the HO2S-1.

Notice: Refer to Fastener Notice in the Preface section.

2. Install the HO2S-1 using the J 39194-C , or equivalent.

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

3. Install the sensor harness and connector to the attachment clip.
4. Connect the HO2S-1 harness connector. Push in the connector until a click is heard and pull back to confirm a positive engagement.