OEM 2000 Buick Regal Oxygen Sensor

2000 Buick Regal Parts Questions & Experts Answers

• Q: How should the Heated Oxygen Sensor (HO2S) and the Oxygen Sensor be handled and installed on 2000 Buick Regal?

  A: The heated Oxygen Sensor (HO2S) along with the Oxygen Sensor both have a connector that is permanently attached to their pigtail and this attachment should not be taken apart because it can damage sensor operation and both devices need gentle handling to maintain clean electrical connections on the pigtail and louvered end and avoid cleaning agents or dropping occurrences. The extraction of the heated Oxygen Sensor demands special attention because engine temperatures below 48°c (120°F) will make it difficult to remove while using force could harm the Exhaust Manifold or pipe threads. Start by turning off the ignition before proceeding to remove the fuel injector sight shield for ho2s 1 replacement or raising the vehicle if replacing ho2s 2. Remove the electric wiring before steadily removing the heated Oxygen Sensor. Apply anti-seize compound p/n 5613695 to the heated Oxygen Sensor/catalyst monitor threads before installing the sensor which should be tightened to 41 n.m (30 lb ft). Return the electrical connector to its position alongside lowering the vehicle until you replace the sight shield for ho2s 1.