Sensor, Oxygen: Removal: 3.6L
The engine is equipped with four heated oxygen sensors:
- The right upstream oxygen sensor (1) is referred to as the 1/1 sensor.
- The right downstream oxygen sensor (2) is referred to as the 1/2 sensor.
- The left upstream oxygen sensor (4) is referred to as the 2/1 sensor.
- The left downstream oxygen sensor (3) is referred to as the 2/2 sensor.
WARNING:
The exhaust pipes and catalytic converter become very hot during engine operation. Allow the engine to cool before removing the oxygen sensor.
- Disconnect and isolate the negative battery cable.
- Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE
.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.
- If equipped with four wheel drive, remove the front drive shaft. Refer to SHAFT, DRIVE, FRONT, REMOVAL .
- Disconnect the heated oxygen sensor electrical connector.
- Remove the oxygen sensor.
- Clean the exhaust pipe threads using an appropriate tap.