How to Replace an Oxygen Sensor on a Ford Truck

by Carl Pruit
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The oxygen sensor on your Ford truck is designed to measure the emissions that are put out from your engine's exhaust, allowing you to know when your vehicle is needing service, which helps keep your truck running properly and maintains good gas mileage. You can replace the truck's oxygen sensor, which is on the passenger side of the engine, in about an hour.

Step 1

Locate the fender well liner on the front passenger wheel well of your Ford truck and disconnect the liner by undoing the screws with a screwdriver and pulling the liner away from the plastic connectors until you can pull it free of the wheel well.

Step 2

Turn your steering wheel all the way to the left so that you have room to access the oxygen sensor without having to remove the tire.

Step 3

Disconnect the negative battery cable from the battery using an open-end wrench and move the cable out of the way.

Step 4

Locate the transmission dipstick on the back of the engine near the firewall and take the dipstick out of the tube, setting it aside in a safe place.

Step 5

Find the transmission tube from underneath the truck that goes into the transmission and find the oxygen sensor that is sitting right next to the transmission tube.

Step 6

Locate the bolt that is holding the transmission tube to the engine block with a bracket and use a socket wrench to unfasten the bolt.

Step 7

Pull the transmission tube straight out of the transmission by hand and move it out of the way.

Step 8

Disconnect the wiring on the end of the oxygen sensor by using a screwdriver to undo the clip holding the wiring connectors together.

Step 9

Remove the oxygen sensor by using an oxygen sensor socket and wrench and carefully undo the sensor so that it doesn't crack while it's being removed.

Step 10

Position the new oxygen sensor and tighten it in place using the oxygen sensor socket and wrench and reattach the wiring connectors for the oxygen sensor.

Step 11

Slide the transmission tube into the transmission and attach the tube to the engine block, securing the bolt with a socket wrench.

Step 12

Place the transmission dipstick back into the tube and attach the negative battery cable on the battery with an open-end wrench.

Step 13

Reattach the wheel well liner under the front passenger wheel, securing the plastic clips and using a screwdriver to fasten the screws.

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