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- 1). Start the engine and let the vehicle run for a couple of minutes then turn it off. The oxygen sensor is located in the exhaust pipe; the heat from running the engine will make the exhaust expand, and the sensor will be easier to unscrew.
- 2). Lift the vehicle with a jack and secure it on jack stands.
- 3). Locate the oxygen sensor, which is just below the junction of the exhaust manifold and the exhaust pipe.
- 4). Put on gloves then disconnect the electrical connection to the sensor by pulling it loose. Do not pull it by the wires. Pull only on the body of the connector.
- 5). Remove the sensor by turning it in a counterclockwise direction with the appropriate-sized wrench.
- 6). Examine the threads of the new oxygen sensor to see if they are already coated with anti-seize compound. If they are not, coat them with a light layer. Some sensors are coated by the manufacturer while others are not.
- 7). Install the new sensor by turning it in a clockwise direction with the wrench. Reattach the electrical connector.
- 8). Raise the vehicle with the jack and remove the jack stands. Carefully lower the vehicle.
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