If you find your gas mileage tumbling into the gutter and your engine running rough, consider replacing your oxygen sensor. Mounted on the exhaust upstream of the catalytic converter, the oxygen sensor measures the ratio of oxygen to exhaust gases. If it detects too much oxygen in the exhaust mixture, it will increase the amount of fuel injected into the combustion chamber; too little, and it decreases it.

A properly functioning Mitsubishi Montero oxygen sensor is key to the Montero’s balance of power with efficiency. The carefully tuned engine required a very specific fuel to air mixture for smooth running.

The oxygen sensor essentially serves as the final check of this mixture. A malfunctioning oxygen sensor tends to inject too much fuel into the chamber, which impedes the combustion process, and will not only lead to poor fuel economy and lack of power, but the engine will not get the maximum burn of all of all of the available fuel, and that can lead to the build-up of unburned deposits within the combustion chamber. Mitsubishi Montero oxygen sensors have a specific expected life, which varies from model to model. They should be changed within the manufacturer specified time or mileage interval. Because they are mounted on the exhaust, consider changing your oxygen sensor whenever you change your exhaust system. Dropping the exhaust on a large vehicle like the Montero is rarely an easy process, so changing the oxygen sensor whenever you have easy access, within reason, of course, is simply intelligent preventative maintenance.Order your Mitsubishi Montero oxygen sensor today from our easy to use online catalogue.