OEM 2000 Chevrolet Malibu Oxygen Sensor

2000 Chevrolet Malibu Parts Questions & Experts Answers

• Q: How to replace the Heated Oxygen Sensor (HO2S) (HO2S1) on 2000 Chevrolet Malibu?

  A: The Heated Oxygen Sensor replacement (HO2S1) should start only when engine temperature reaches 48°C (120°F) because low temperatures make extraction challenging. Use the heated oxygen sensor wrench (J 39194) to disconnect the HO2S 1 electrical connector while carefully removing the sensor which demands preservation of connector and pigtail integrity. The maintenance of both the in-line electrical connector and the louvered end requires total exclusion of contaminants and prohibits the use of cleaning solvents. Before reinstalling the HO2S 1 you should coat its oxygen sensor threads with anti-seize compound (P/N 5613695 or equivalent) if repeating sensor use (speciality compound required for threads). Tighten HO2S 2 (post-catalytic converter) to 42 N.m (31 lb ft) before connecting its electrical connector. Accurate fastening methods combined with proper torque procedures protect both components and operational frameworks.