If you're experiencing a decrease in fuel efficiency or a check engine light has appeared on your dashboard, it may be time to replace your oxygen sensors. These sensors measure the amount of oxygen in your exhaust and send that information to your vehicle's computer, which then adjusts the air/fuel mixture accordingly. A faulty oxygen…

If you own a Toyota 2003 Sienna 3.0L, you may eventually need to replace the oxygen sensors. These sensors are responsible for monitoring the amount of oxygen in the exhaust gases and sending that information to the engine's computer. Over time, they can become worn and need to be replaced. In this article, we will…