The oxygen sensors are very vital parts in a car’s exhaust system. As a result of regular usage, things like oil and coolants settle inside the oxygen sensors over time. It is necessary to clean the sensor to ensure that performance is not negatively touched. If you do not clean the sensor, it could result to issues like inefficient combustion and reduced performance, and it may eventually have to be changed.
N/B: Gasoline is actually a very flammable substance, thus ensure you keep it away from any potential heat sources when carrying out this task.
1 – PREPARE YOURSELF AND YOUR CAR
Before you begin cleaning the oxygen sensors, be sure to pay special attention to safety. Protect yourself with work gloves, work goggles, and a face mask, especially when operating with the gasoline.
The first step to cleaning the oxygen sensors is to find and remove them, but for this, you will have to ake use a jack to give you access. Park your car in a well-lit, well-ventilated, and clutter-free location. Then, use your jack to carry the car, ensuring it is held in position. Use the axle/jack stands as well to ensure the car is lifted safely for you to work under it.
2 – LOCATE AND REMOVE
Slide under the car and find the oxygen sensors that need to be cleaned. The oxygen sensors that go upstream are located in front of the converter, and the ones that go downstream are found right after the converter.
Spray WD-40 on the sensors to lubricate them and make them easier to remove. After 10 minutes or so, unplug them, and use a wrench to free the sensors from their fittings.
3 – PUT SENSORS IN CONTAINER AND SUBMERGE
Get hold a container with a lid that fits tightly along the edges to prevent any leaks. Also,ensure that this container is safe to put gasoline into before you continue any further.
Place the oxygen sensors in the container and then steadily pour gasoline from a gas can into the container as well. The quantity of the gas should be enough to fully cover the sensors in the liquid. When you finish filling it, close the lid of the container, pick it up, and swirl it around, taking care not to shake or stir it real hard. This will help the gas to move and enter all parts of the oxygen sensors.
After you’re confident the gas been moved well, you need to let the container rest. Leave it in a cool, dry place overnight to offer the gas enough time to react with the settlements and dirt on the sensors.
4 – RE-AGITATE THE MIXTURE
After leaving the container overnight, you should now start with the remainder of the cleaning process. Lift the container and swirl it around again to re-agitate the mixture inside.
5 – SCRUB SENSORS LIGHTLY
If some of the dirt and sediment hasn’t gone off your sensors after their gas soak, you can now take a medium, soft-bristled brush to them. Dip the brush into the gasoline and lightly scrub each sensor, taking care not to scrub too hard to avoid creating damage. This should remove the rest of what might be left.
6 – DRY AND FIT THE SENSORS BACK INTO PLACE
Use a paper towel to dry the oxygen sensors and move to fit them back into their proper position. Use your wrench to tighten the bolts on the sensors so they are secure.