Oxygen Sensor: Service and Repair

Heated Oxygen Sensor:

Disconnect engine harness lead from Sensor.

CAUTION:
- Care should be exercised so that no pulling force is put on sensor wire.
- Use care in working around sensor as the exhaust manifold may be extremely hot.

Remove sensor using Tool C-4907 For Heated 02 Sensors. When the sensor is removed, the exhaust manifold threads must be cleaned with an l8mm x 1.5 x 6E tap. If the same sensor is to be reinstalled, the sensor threads must be coated with an anti-seize compound such as Loctite 771-64 or equivalent. New sensors are packaged with compound on the threads and no additional compound is required. Sensors must be torqued to 27 N.m (20 foot pounds).