OEM 2002 Buick Regal Oxygen Sensor

2002 Buick Regal Oxygen Sensor Parts and Q&A

• Q: How to replace the Heated Oxygen Sensor (HO2S) on 2002 Buick Regal?

  A: For ho2s replacement work you need these tools: Oxygen Sensor wrench (J 39194). Oxygen Sensor wrench (J 39194). Handle both ho2s and Oxygen Sensor components with care while protecting the in-line electrical connector and louvered end from grease or contaminant exposure. Do not use any cleaning solvents during this process. Sensor removal must wait until the engine temperature reaches above 48°c (120°F) so the sensor becomes easy to extract. First disconnect the ho2s electrical connector and remove its retaining clip after dismantling the fuel injector sight shield. Move the ho2s electrical connector off its bracket mounting position. Use the Oxygen Sensor wrench j 39194 for safe removal of the right Exhaust Manifold ho2s. A newly reused sensor requires application of anti-seize compound p/n 12377953 or alternative which should be applied to sensor threads when necessary. Fasten the ho2s onto the right Exhaust Manifold with the Oxygen Sensor wrench (J 39194) to achieve a torque of 41 n.m (30 lb ft). Reinstall the fuel injector sight shield following the bracket retainer installation alongside ho2s electrical connector reattaching and wiring harness electrical connector reconnecting to the ho2s.