Your fuel supply can’t burn without a steady supply of oxygen. In fact, your engine strives for an optimal oxygen-to-fuel ratio of 14.7 to 1 in your combustion cylinders. To help your vehicle reach this mixture, your onboard computer relies on the Chevy Lumina oxygen sensor to measure the amount of oxygen that is leaving your cylinders.

You will find your Lumina oxygen sensor mounted near your exhaust manifold, where it measures the red-hot exhaust and sends information to your vehicle’s computer hundreds of times per minute. Fortunately, the oxygen sensor is designed to work better when the temperature surrounding it is at least 600 degrees Fahrenheit.

There are other sensors in the network that monitors oxygen content, but the oxygen sensor is the only one that is actually in the path of your exhaust. This means when your Chevy Lumina oxygen sensor is not working right, your vehicle relies on the best guesses of the other sensors. Without an accurate oxygen measurement, too much fuel is usually injected rather than too little, since not enough fuel can damage your engine. Some of the symptoms of a faulty Lumina oxygen sensor include a loss of fuel economy, hot engine running, and foul-smelling exhaust smoke. Over time, the excess fuel consumed by a bad Chevy Lumina oxygen sensor can also damage your catalytic converter, so it is important to replace your oxygen sensor regularly—not only to save on fuel costs, but also to prevent further damage.You will find a full line of Lumina oxygen sensors in our online catalogue, in stock and ready to ship to your door, all at our great discount prices.