OEM 2002 Buick Park Avenue Oxygen Sensor

2002 Buick Park Avenue Oxygen Sensor Parts and Q&A

• Q: What tools are required to replace the Heated Oxygen Sensor (HO2S) and what are the steps involved in the process on 2002 Buick Park Avenue?

  A: The necessary tools for heated Oxygen Sensor (HO2S) replacement include an Oxygen Sensor wrench (J 39194). Oxygen Sensor wrench (J 39194). The ho2s along with the Oxygen Sensor retains their connector-pigtail permanently so do not detach them to prevent sensor dysfunction. The handling of ho2s and o2s must preserve their in-line electrical connector along with louvered end by keeping them clean from contamination and grease using no cleaning fluids. Start the inspection process with engine off while supporting the vehicle at its height. Start removal by taking off both the splash shield and ho2s electrical connector retaining tab that secures the connector. The ho2s electrical connector loses its Oxygen Sensor connector while being unlinked for servicing. Before attempting Oxygen Sensor removal operators need to wait until engine temperature drops below 48°c (120°F) because higher temperatures lead to installation challenges. The Oxygen Sensor wrench (J 39194) should be used to separate the Oxygen Sensor from its position inside the Exhaust Pipe. Reused sensor threads should receive special anti-seize compound treatment before installation by using p/n 5613695 or equivalent if necessary. The exhaust installation of the Oxygen Sensor requires a torque of 41 n.m (30 lb ft) for proper tightening. Position the ho2s connector to the ho2s electrical connector and return the retaining tab to its position on the ho2s electrical connector. Complete installation by adding the front splash shield then lowering the vehicle.