Sensor, Oxygen: Removal: 3.2L: Front
The engine is equipped with four heated Oxygen (O2) sensors:
- The front upstream oxygen sensor is referred to as the 2/1 sensor.
- The front downstream oxygen sensor 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.
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.
- Disconnect the heated O2 sensor wire harness connectors (1).
- Remove the upstream O2 sensor (2).
- Raise the vehicle and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE .
- Remove the belly pan. Refer to BELLY PAN, REMOVAL
.
- Disconnect the heated O2 sensor electrical connector (2).
- Remove the downstream O2 sensor (3).
- Clean the exhaust pipe threads using an appropriate tap.