- 1). Locate the exhaust manifold bolted to the side of the engine head on the driver's side of the motor. Follow the exhaust pipe (called the down tube) from the manifold to the large oval catalytic converter that bolts to the pipe. The O2 sensor has a green wire extending from it; the sensor is white and it looks almost like a spark plug.
- 2). Trace the green wire to the wiring harness it connects to. It should be about 4 to 6 inches away from the O2 sensor.
- 3). Disconnect the green wire from the wiring harness by pulling the plastic connector on the green wire off the harness.
- 4). Tie the green wire around another wire on the harness to prevent the wire from hanging and possibly falling onto the exhaust pipe.
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