Land Rover Oxygen Sensor Removal

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The oxygen sensor on your Land Rover is the device that measures the balance of oxygen and emissions coming through your exhaust system and is essential to the proper functioning of your car. A faulty oxygen sensor can cause the car to sputter and run inefficiently, because the Land Rover's computer is reading the emissions incorrectly. Replacing an oxygen sensor on your Land Rover is simple and can be done by anyone.

Locate ALL of the sensors

  • Land Rovers can be equipped with a number of oxygen sensors along the length of their exhaust systems, thus you will first need to locate all of them in order to replace them. Begin by checking at the header connection on the motor for one or two oxygen sensors and then move down to the catalytic converter. Normally, the main oxygen sensor will be located on the converter housing itself—and may be one other oxygen sensor located near the header intake.

Unplug the harnesses

  • Use a screwdriver or unplug the oxygen sensors from their wiring harnesses by hand. Simply pry open the small latch with your fingers or a screwdriver and then wiggle the two pieces of the harness free of one another. Pull the wiring free of the various ties and other mounting brackets. Then make sure there is not a rubber housing covering the top of the oxygen sensor. If there is, pull it free with a set of pliers.

Unscrew the oxygen sensor

  • Use the special slotted oxygen center wrench to attach to the top of the old oxygen sensor, and then loosen/remove the oxygen sensor with a ratchet wrench. You may need to use a bit of force to break the oxygen sensor free, but then it should unscrew just like any other bolt. You can then clean out the hole and treat the threads with anti-seize compound in preparation for the new oxygen sensor.

References

  • Photo Credit Matt Cardy/Getty Images News/Getty Images
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