pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

Heated Oxygen Sensor 1 Replacement|Page 1582 > < Heated Oxygen Sensor 1 Replacement|Page 1580
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Oxygen Sensor: Service and Repair
Heated Oxygen Sensor 2 Replacement

Heated Oxygen Sensor 2 Replacement

Tools Required

J 39194-C Oxygen Sensor Wrench

Removal Procedure

1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Remove the wheel drive shaft heat shield.
3. Note the routing of the heated oxygen sensor (HO2S) electrical harness.
4. Disconnect the HO2S electrical connector (2), in the engine compartment.

5. Carefully bend the edge of the channel on the LH side of the exhaust heat shield outboard, just enough to release the HO2S electrical harness (1).

Notice:  Refer to Heated Oxygen and Oxygen Sensor Notice.

Notice:  Refer to Excessive Force and Oxygen Sensor Notice.

6. Using the J 39194 carefully remove the HO2S.
7. Lower the HO2S electrical harness away from the underbody.

Installation Procedure

Important:  A special anti-seize compound is used on the HO2S threads. The compound consists of a liquid graphite and glass beads. The

Heated Oxygen Sensor 1 Replacement|Page 1582 > < Heated Oxygen Sensor 1 Replacement|Page 1580