How to replace an oxygen sensor
If your check engine light comes on, you might have a failed oxygen O2 sensor. TheO2 sensor sends datato your car’s computer system. This data tells the computer how much fuel to inject in to the engine. Your O2 sensor also tracks the performance of the catalytic convertor. It is not difficult to learn how to replace an O2 sensor.Also, keep in mind that some cars have two sensors. However, if you buy the part from the manufacturer, it will be more expensive. You can buy a cheap sensor or a universal unit from an auto parts store.
Please keep in mind that all oxygen sensors are not the same. Now, find out how to replace and oxygen sensor. Think safety first.
Remove the bad oxygen sensor
First, make sure youremove the bad oxygen sensor. Your sensor is part of the car’s exhaust system and you can locate it by using your car’s repair manual. It will most likely be in the exhaust system or on the exhaust manifold. Disconnect the battery cables and remove the electric plug. Apply oil or a penetrating spray to loosen the sensor.
Do not work on a hot vehicle and you might have to raise it and place it safely on jack stands. Connect the O2 sensor socket to your socket wrench. Place the wrench over the oxygen sensor. Twist the wrench counter clockwise to remove the socket and do not damage the sensor wires. Take the bad sensor to the auto parts store with you and buy a new sensor.
Install the new oxygen sensor
Next, get ready to install the new sensor. Your replacement unit should have an adaptor. Do not cut wires to install the new unit. The threads on the new unit should be coated with an anti-seize compound. This compound makes it easy to remove and install the O2 sensor.
Some sensors may have just the wires and not the adaptor. If the new unit has only wires, you can cut off the plug from the old unit and attach it to the new unit. Do not forget to read the installation instructions that may be listed on the box or inside the box. You can also obtain advice from the auto parts store representative about installing the sensor.
Install the O2 sensoralmost the same way you removed the sensor. Make sure it is tight and secure. Connect the electrical plug. Let the car down from the jack stands and reconnect the battery cables.
Finally, make sure nothing touches the 02 sensor’s tip because it can become contaminated. If you follow these steps carefully, you can complete this repair with no problems. On the other hand, it might take some time and preparation. In the long run, it is beneficial because an auto repair shop will charge you about $200.00 to complete this repair. Basically, you just need the right tools, the right parts and the right instructions on how to replace an oxygen sensor.
