Oxygen Sensor: Removal

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

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

Refer to Fig 1, Fig 2 or Fig 3 for O2S (oxygen sensor) location.

Fig 1: OXYGEN SENSORS - 2.4L

Courtesy of DAIMLERCHRYSLER CORP.

1 - ELECTRICAL CONNECTORS

2 - UPSTREAM SENSOR (1/1)

3 - ELECTRICAL CONNECTORS

4 - DOWNSTREAM SENSOR (1/2)

Fig 2: OXYGEN SENSORS - UPSTREAM - 3.7L

Courtesy of DAIMLERCHRYSLER CORP.

1 - RIGHT UPSTREAM SENSOR (2/1)

2 - ELECTRICAL CONNECTORS

3 - LEFT UPSTREAM SENSOR (1/1)

4 - ELECTRICAL CONNECTORS

Fig 3: OXYGEN SENSORS - DOWNSTREAM - 3.7L

Courtesy of DAIMLERCHRYSLER CORP.

1 - ELECTRICAL CONNECTORS

2 - ELECTRICAL CONNECTORS

3 - LEFT DOWNSTREAM SENSOR (1/2)

4 - RIGHT DOWNSTREAM SENSOR (2/2)

WARNING: THE EXHAUST MANIFOLD, EXHAUST PIPES AND CATALYTIC CONVERTER BECOME VERY HOT DURING ENGINE OPERATION. ALLOW ENGINE TO COOL BEFORE REMOVING OXYGEN SENSOR.

Raise and support vehicle.
Disconnect wire connector from O2S sensor.
CAUTION: When disconnecting sensor electrical connector, do not pull directly on wire going into sensor.
Remove O2S sensor with an oxygen sensor removal and installation tool.
Clean threads in exhaust pipe using appropriate tap.