REMOVAL & INSTALLATION

The oxygen sensor can be located in the front pipe/catalytic converter. There are two sensors in the pipe, the rear one is always the sub-sensor. The vehicle must be raised and supported in the air in most situations to remove the sensor(s).

WARNING
Care should be used during the removal of the oxygen sensor. Both the sensor and its wire can be easily damaged.

1. The best condition in which to remove the sensor is when the engine is moderately warm. This is generally achieved after two to five minutes (depending on outside temperature) of running after a cold start. Wearing heat resistant gloves is highly recommended during this repair.
2. With the ignition OFF, unplug the connector for the sensor.

   Fig. 2: Disconnecting the sensor wiring harness

3. Remove the two sensor attaching nuts.

   Fig. 3: Sometimes it may be hard to access the retaining nuts retaining the sensors

   Fig. 4: Inspect the old nuts, and replace them if necessary

4. Remove the oxygen sensor from its mount and discard the gasket.

   Fig. 5: Remove the sensor . . .

   Fig. 6: . . . and the old gasket

   To install:

   NOTE: During and after the removal, use great care to protect the tip of the sensor if it is to be reused. Do not allow it to come in contact with fluids or dirt. Do not attempt to clean it or wash it.

5. Apply a coat of anti-seize compound to the bolt threads but DO NOT allow any to get on the tip of the sensor.
6. Position a new gasket, install and secure the sensor to 14 ft. lbs. (20 Nm).
7. Reattach the electrical wiring and insure a clean, tight connection.