Removal & Installation
- Disconnect negative battery cable. Heated Oxygen sensors are mounted in exhaust manifold and in exhaust pipe after TWC. Sensors are equipped with a permanent pigtail which must be protected from damage when removing sensor. Ensure sensors are free of contaminants, but avoid using cleaning solvents of any type.
- HO2S sensor may be difficult to remove when engine temperature is less than 120°F (49°C). Use care not to damage exhaust manifold or exhaust pipe threads. Always use anti-seize compound on threads before installing NEW sensor. New sensor comes pre-coated with anti-seize compound. DO NOT remove anti-seize compound from sensor. Tighten HO2S to 29-36 ft. lbs. (40-50 N.m).
- Disconnect negative battery cable. O2S is mounted just below exhaust manifold. HO2S is mounted in exhaust pipe after TWC. HO2S requires removal of carpet next to console on passenger side for connector access. Sensors are equipped with a permanent pigtail which must be protected from damage when removing sensor. Ensure sensors are free of contaminants, but avoid using cleaning solvents of any type.
- Oxygen sensors may be difficult to remove when engine temperature is less than 120°F (49°C). Use care not to damage exhaust pipe threads. Always use anti-seize compound on threads before installing NEW sensor. New sensor comes pre-coated with anti-seize compound. DO NOT remove anti-seize compound from sensor. Tighten oxygen sensors to 30 ft. lbs. (41 N.m).