Oxygen Sensor: Service and Repair
Fig. 6 Oxygen sensor replacement:
The oxygen sensor should be removed when engine temperature is above 120° F to prevent damage to threads in exhaust pipe or manifold.
1. Disconnect battery ground cable.
2. Raise and support vehicle.
3. Disconnect inline electrical connector, then remove oxygen sensor using a suitable wrench, Fig. 6.
4. Reverse procedure to install. Apply suitable anti-seize compound to sensor threads and torque sensor to 30 ft. lbs.