HO2S Replacement - Sensor 1

NOTE: The Heated Oxygen Sensor (HO2S) and the Oxygen Sensor use a permanently attached pigtail and connector. Do not remove this pigtail from the Heated Oxygen Sensor. Damage or the removal of the pigtail or the connector could affect the. proper operation of the sensor.

Take care when handling the HO2S and the 02S. keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants. Also avoid using cleaning solvents of any type. Do not drop the HO2S or the 02S. Do not roughly handle the HO2S or the 02S.

IMPORTANT: Take care when handling the heated oxygen sensor. The in-line electrical connector and louvered end must be kept free of grease, dirt or other contaminants. Also, avoid using cleaning solvents of any type. Do not drop or roughly handle the heated oxygen sensor/catalyst monitor. A dropped sensor is a bad sensor.

NOTE:
^ Remove oxygen sensors with the engine temperature above 48°C (120°F). Otherwise the oxygen sensors may be difficult to remove.
^ Take care when handling oxygen sensors. The electrical connector and louvered end must be kept free of contaminants. Do not use cleaning solvents on the sensor. Do not drop or mishandle the sensor.
^ A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.

IMPORTANT: Take care when handling the heated oxygen sensor. The in-line electrical connector and louvered end must be kept free of grease, dirt or other contaminants. Also, avoid using cleaning solvents of any type. Do not drop or roughly handle the heated oxygen sensor/catalyst monitor. A dropped sensor is a bad sensor.

REMOVAL PROCEDURE

TOOLS REQUIRED
J 39194 Oxygen Sensor Wrench

1. Remove the HO2S1 retaining clip (4) from the bracket (1).
2. Disconnect the HO2S1 sensor electrical connector tab (3) from the HO2S1 retaining clip (4).
3. Remove the HO2S1 sensor electrical connector retainer.

CAUTION: Refer to Hoist Caution in Service Precautions.




4. Raise and support the vehicle.
5. Remove the rear oxygen sensor from the rear exhaust manifold carefully using the J 39194 Oxygen Sensor Wrench.

INSTALLATION PROCEDURE





NOTE: Refer to Fastener Notice in Service Precautions.

1. Install the rear oxygen sensor in the rear exhaust manifold.

Tighten
Tighten the rear HO2S sensor to 41 N.m (30 lb ft).




2. Connect the HO2S1 sensor electrical connector (3) to the HO2S 1 sensor (4).
3. Connect the HO2S1 sensor electrical connector tab (4) to the bracket (1).
4. Install the HO2S1 sensor electrical connector retainer.
5. Lower the vehicle.