Oxygen (O2) Sensor: Removal
- O2 sensor is mounted in the exhaust pipe, below exhaust manifold. Ensure sensor is free of contaminants. DO NOT use cleaning solvents of any type. Sensor may be difficult to remove when engine temperature is less than 120°F (48°C). Excessive removal force may damage threads in exhaust manifold or pipe.
- Disconnect negative battery terminal. Disconnect electrical connector from O2 sensor. Carefully remove O2 sensor from exhaust pipe.
CAUTION:
Correct torque of O2 sensor is critical to prevent crushing glass beads in graphite anti-seize compound. Crushing glass beads will cause sensor to seize in exhaust manifold. This may require replacement of exhaust manifold upon next removal.