Afterwards, you should know the basic function, working principle, bad symptoms, and average replacement cost of an oxygen sensor. Looking for a good online repair manual?
Click Here for the 5 best options. The internal combustion engine of your vehicle will always produce exhaust gases after the air and fuel mixture has ignited in its cylinders. These gases contain a lot of different elements in them, such as carbon and oxygen.
In the exhaust manifold, there is a component called an oxygen sensor which keeps track of the oxygen level in these exhaust gases as they leave the engine. This is oxygen that did not burn during the original air and fuel combustion. After the oxygen sensor detects the oxygen level, it sends this information back to the engine control module.
This, of course, is the central computer that manages all the systems in the vehicle and communicates with a variety of different sensors that are within them. When the engine control module receives information about the oxygen level in the exhaust gases, it will know if the engine is burning too much fuel or too little fuel. For instance, if there is more air than fuel in the chamber cylinders, this will cause a lean combustion to take place.
The exhaust gases that emit from such a combustion will have more oxygen in them. Once the oxygen sensor detects this and transmits the data to the engine control module, then the computer will make the proper adjustments to the timing of the fuel injectors and the operation of the engine.
The oxygen sensor is a vital component of the engine. If anything were to cause the oxygen sensor to malfunction, it could interfere with the entire internal combustion process. Then you could experience all sorts of problems with your engine while driving. Fortunately, these symptoms are easy enough to recognize so that you will know trouble exists somewhere in your engine or with its corresponding components.
Below are the top 5 symptoms of a bad or worn out O2 sensor. Although it is not common for this sensor to go bad, it could happen if you keep your car for a long time.
As mentioned, the oxygen sensor has a powerful influence over the air and fuel combustion process. If the sensor detects there to be less oxygen in the exhaust gases after combustion, the engine control module will try to correct this. The module will then detect that some kind of engine problem is present. This causes the Check Engine warning light to illuminate on the dashboard. Codes P , P , P , P , P , P , or P , are examples of diagnostic trouble codes that may indicate an issue with an oxygen sensor.
If there is a rich air and fuel mixture in any of the combustion cylinders, this means that more fuel is present than air. This will not be detected by the oxygen sensor if it has gone bad.
The result is a bad fuel economy and more money spent on gas. A rough idling engine means your engine does not run steady when the car is parked or stopped. The normal RPM rate for an idle engine is under 1, But if your engine RPM shoots up to 2, or 3,, for instance, then you have a rough idling problem. This can be a symptom of many kinds of car problems, including a bad oxygen sensor.
The engine timing will be more difficult for the engine control module to manage. A bad oxygen sensor could also expose you and your family to carbon monoxide. Over time, your oxygen sensors can become caked with byproducts of combustion like sulfur, lead, fuel additives, and oil ash.
If your car is less than 15 years old, you should have your oxygen sensors replaced by a professional every 60, to 90, miles to keep your engine running smoothly and reduce pollution. If your vehicle is older, you should replace the sensors every 45, to 65, miles instead. We can also help you find a great deal on a new or certified pre-owned car. We offer leases and easy financing as well. Explore our website for more information and a quick appraisal for your trade-in, or visit us for a test drive.
Write a comment Name required. Mail will not be published required. However, if the problem is simply a worn-out O2 sensor, this part is fairly simple and inexpensive to replace. Is your check engine light on? Do you need a new O2 sensor? We have the best in certified mechanics who offer great repairs on engines, transmissions, electrical systems and much more. Contact our team today! Categorised in: Automotive Repair Service.
Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. The fact is, this is a minor repair, but it has some major significance. Here are the basics. Why it breaks Over time, the parts of a car experience normal wear and tear. Breathe Easier Is your check engine light on?
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