Upstream O2 Sensor

Fig 88 Upstream Heated Oxygen Sensor Removal/Installation:

REMOVAL
1. Raise and support vehicle.
2. Disconnect electrical connector from sensor.
3. Remove sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent (Fig. 88).

INSTALLATION
1. After removing the sensor the exhaust manifold threads must be cleaned with an 18 mm X 1.5 + 6E tap.
- If reusing the original sensor, coat the sensor threads with an anti-seize compound such as Loctite 771-64 or equivalent.
- New sensors have compound on the threads and do not require an additional coating.
- Tighten the sensor to 28 Nm (20 ft lb) torque.

2. Connect electrical connector to sensor.
3. Lower vehicle.