How to Change an Oxygen Sensor

Step-by-Step Guide

1. 1

   Step 1: Locate the oxygen sensor on your vehicle by looking for a part that looks like a spark plug that sticks out from the exhaust pipe.

   It will have an electrical connection attached to it.
2. 2

   Step 2: Disconnect the electrical connection on the oxygen sensor.

   Use a flat tip screwdriver to push in the tabs and pull the connection apart. , The majority of oxygen sensors will take an SAE 7⁄8 inch (2.2 cm) wrench. , If the new one did not come with an electrical connection, but just with the wires stubbed out, you need to do a little work.
   
   Cut off the old connector from the bad oxygen sensor, strip the wires and solder the wires to the new oxygen sensor.
   
   You can also use butt connectors.
   
   Use heat sensitive shrink tape to seal the connections.
   
   Follow manufacturer's instructions to know which wires to tie together. , Add a small amount of anti-seize to the threads of the new sensor.
   
   Screw it in place clockwise and snug it down with the socket or open-end wrench.
   
   Do not over tighten the sensor as you might strip the threads. ,, Use the diagnostic scanner/reader to clear the code from the vehicle's computer. , You should notice an immediate improvement.
3. 3

   Step 3: Unscrew the oxygen sensor off the exhaust pipe using either an open-end wrench or a special socket made to remove it.

4. 4

   Step 4: Compare your new oxygen sensor to the old one.

5. 5

   Step 5: Reverse the steps used in removing the oxygen sensor and install the new part.

6. 6

   Step 6: Plug the electrical connections back in.

7. 7

   Step 7: Turn on the ignition key

8. 8

   Step 8: but do not start your vehicle.

9. 9

   Step 9: Start the car.

Detailed Guide

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