Oxygen Sensor - Removal

REMOVAL - 4.0L






CAUTION: Never apply any type of grease to the oxygen sensor electrical connector, or attempt any repair of the sensor wiring harness.

WARNING: The exhaust pipes and catalytic converter become very hot during engine operation. Allow the engine to cool before removing the oxygen sensor.

1. Disconnect and isolate the negative battery cable at battery.
2. Raise and support vehicle.
3. Disconnect wire connector from O2S sensor.

CAUTION: When disconnecting the oxygen sensor electrical connector, do not pull directly on the wire going into the sensor. The sensor wiring can be damaged resulting in sensor failure.

4. Remove O2S sensor (3) or (4) with Oxygen Sensor Socket C4907.
5. Clean threads in exhaust pipe using appropriate tap.