Saturday, November 23, 2013
How to Repair the Oxygen Sensor in a Ford Explorer
Oxygen sensors monitor the oxygen saturation in your Ford Explorers exhaust. The fuel to air ratio is regulated based on the readings from the oxygen sensors. A failing oxygen sensor can cause decreased fuel economy. Improve your fuel consumption as well as your Explorers emissions by replacing faulty oxygen sensors. You can purchase a new oxygen sensor at an auto parts store or Ford dealership.
Instructions
- 1
Disconnect the battery cable from the negative battery terminal. Set the cable in a secure area away from the terminal.
2Lift the truck with a jack and position a set of jack stands securely beneath it to support the vehicle while you work under it. Remove the jack when your Explorer is secure.
3Locate the O2 sensors along the exhaust. Depending on the engine your Explorer is equipped with, there are anywhere from one to four O2 sensors along the exhaust pipes and the manifold. Change your O2 sensors one at a time to make the process easier.
4Disconnect the electrical connection from the top of the sensor. The electrical connection plugs into the wiring pigtail on the top of the sensor.
5Unscrew the sensor from the manifold or exhaust pipe using an oxygen sensor socket and ratchet. Discard the old sensor.
6Coat the threads of the new sensor carefully with anti-seize compound if your new sensor is not pre-treated with it. Many sensors are pre-treated with anti-seize.
7Install the sensor using an oxygen sensor socket and ratchet to tighten it securely. Attach the electrical connector to the pigtail.
8Raise your Explorer with the jack and remove the jack stands. Lower the truck to the ground.
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