Rainier AWD L6-4.2L (2007)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor 1 Replacement
Heated Oxygen Sensor 1 Replacement
Tools Required
J39194-B Heated Oxygen Sensor Wrench
Removal Procedure
Notice: Refer to Heated Oxygen Sensor Resistance Learn Reset Notice.
Notice: Refer to Heated Oxygen and Oxygen Sensor Notice.
1. Disconnect the heated oxygen sensor (HO2S) electrical connector (1).
Notice: Refer to Excessive Force and Oxygen Sensor Notice.
2. Remove the HO2S (2) using a J39194-B.
Installation Procedure
Important: Use special anti-seize compound on the heated oxygen sensor threads. The compound consists of graphite suspended in fluid and
glass beads. The graphite burns away, but the glass beads remain, making the sensor easier to remove. New service sensors already have the
compound applied to the threads. If you remove an oxygen sensor and if for any reason you must install the same oxygen sensor, apply the
anti-seize compound to the threads before reinstallation.
1. Coat the threads of the heated oxygen sensor with the anti-seize compound P/N 5613695, or the equivalent if necessary.
Notice: Refer to Component Fastener Tightening Notice.
2. Install the heated oxygen sensor (2) using a J39194-B.
Tighten the HO2S to 41 N.m (30 lb ft).
3. Connect the HO2S electrical connector (1).
