Oxygen Sensor: Service and Repair

NOTE:
The oxygen sensor is located above the outlet of the left exhaust manifold.

Heated Oxygen Sensor Electrical Connection:

REMOVAL/INSTALLATION

1. Disconnect the main engine harness from oxygen sensor connector.


CAUTION: Take care not to pull on oxygen sensor wires when servicing the O2 sensor.

WARNING: THE EXHAUST PIPE MAY BE EXTREMELY HOT. AVOID CONTACT WITH THE EXHAUST PIPE WHEN SERVICING THE OXYGEN SENSOR.


2. Remove O2 sensor with Tool C-4907.

NOTE: The original O2 sensor threads were coated with an anti-seize compound. The compound must be removed from the threads in the exhaust manifold prior to sensor installation.

3. Clean the threads in the exhaust manifold with an 18 mm X 1.5 + 6E tap.

4. If the original sensor is to be installed, the sensor threads must be coated with an anti-seize compound (Loctite 771-64 or equivalent). New O2 sensors are packaged with compound on the threads and additional compound is not required.

5. Tighten sensor to 27 Nm (20 ft. lbs.) torque.