August 15, 2021
If someone asked you what gas made up the largest portion of the atmosphere, what would you guess? Well, it's not oxygen; it only makes up 20.9 percent. But since we're talking about oxygen, you should know that your vehicle uses oxygen sensors to make sure your engine is running the way it should.
The oxygen sensors measure how much oxygen is in your exhaust. If there's too much, it means there's a problem with the mixture of fuel and air. The sensor sends signals to computers in your engine and adjusts the mixture so it maximizes performance and efficiency. It does this constantly.
Many vehicles have multiple oxygen sensors. Some have one close to the engine, another close to the muffler. Two measurements are better than one since they allow readings to be more accurate. You may have a vehicle with a dual exhaust, so you'd have twice as many oxygen sensors.
Your oxygen sensors can fail. One thing that can damage them is contamination from bad fuel. The sensors can simply wear out, though they usually last a long time. It's not unusual for an oxygen sensor to last 100,000 miles/160,000 km. One more thing that can cause an oxygen sensor to fail is residue from an engine that's burning oil. Plus contaminants from the road like salt can also cause problems.
Here are some signs that your oxygen sensors might be failing.
Head to your service facility and tell your advisor what symptoms your vehicle is experiencing. They have the equipment and training to track down the issue. Note that simply replacing the oxygen sensor is often not enough since it doesn't get to the root of the problem; other repairs may be needed.
So make sure your oxygen sensors are working the way they should be. Oh, and back to the question of what gas makes up most of the Earth's air? It's nitrogen, which comprises 78 percent of the air we—and our engines—breathe.
Tuffy Pelham
3422 Pelham Parkway
Pelham, Alabama 35124
205-624-2190
https://www.tuffypelham.com/
March 30, 2025
We all know about winter tires. But did you know there is such a thing as summer tires? Most people have all-season tires on their vehicles. They work pretty well in a variety of weather conditions. But if you want better handling and performance, you might consider switching to summer tires. ... More
March 23, 2025
It's one of those things that can happen on a multi-day road adventure or a quick trip to the grocery store. You hit a pothole, go too fast over a speed bump, nail a curb. When it happens, you think, "I wonder if that was hard enough to do any damage?" But things seem ok and you continue on yo... More
March 16, 2025
If you own a newer vehicle, your vehicles manufacturer may require that it use synthetic oil instead of conventional oil. Synthetic oils are more stable, dont break down as easily, and provide better engine protection than conventional oil. All those things can prolong the life of your engine an... More