Removal
REMOVAL - 4.0L
CAUTION: Never apply any type of grease to the oxygen sensor electrical connector, or attempt any soldering of the sensor wiring harness.
WARNING: The exhaust manifold, 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 sensor electrical connector, do not pull directly on the wire going into sensor.
4. Remove O2S sensor (3) or (4) with Oxygen Sensor Socket C4907.
5. Clean threads in exhaust pipe using appropriate tap.