Heated Oxygen Sensor (HO2S) 1 Replacement
TOOLS REQUIREDJ 39194 Oxygen Sensor Wrench
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 O2S. 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 O2S. Do not roughly handle the HO2S or the O2S.
Removal Procedure
1. Remove the fuel injection sight shield.
2. Turn OFF the ignition switch.
3. Remove the HO2S retaining clip from the bracket.
4. Disconnect the HO2S electrical connector tab from the HO2S 1 retaining clip.
5. Remove the HO2S electrical connector retainer.
6. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
IMPORTANT: Remove oxygen sensors with the engine temperature above 48°C (120°F). Otherwise the oxygen sensors may be difficult to remove.
7. Remove the rear oxygen sensor (2) from the rear exhaust manifold carefully using the J 39194
Installation Procedure
NOTE: Refer to Fastener Notice in Service Precautions.
IMPORTANT: 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.
1. Install the rear oxygen sensor (1) in the rear exhaust manifold.
Tighten
Tighten the rear HO2S to 41 N.m (30 lb ft).
2. Lower the vehicle.
3. Connect the electrical connector (3) to the HO2S.
4. Connect the HO2S electrical connector tab to the bracket.
5. Install the HO2S electrical connector retainer.
6. Install the fuel injection sight shield.