I've recently bought a pick-up (2000 Nissan Frontier 2wd 4 cyl). It has about 118k on the odometer, mostly highway miles. Engine runs good, transmission shifts well, etc. However, the gas mileage is ...

Hello Paul, I have heard that faulty oxygen sensors are the reason my car is using more fuel than usual. What does this sensor actually measure, and how does it influence fuel efficiency and emissions ...

We've all experienced a check engine light coming on, knowing that unless it's taken care of immediately, it'll be a nagging long-term problem in the back of our minds. It's one of the most important ...

If your daily commute to work is starting to feel like it just might not be worth it, you're probably not alone. Miles equal dollar signs, and every moment spent idling at a red light is painful when ...

While O2 sensors have no fixed replacement schedule, your driving style and the health of other engine components can drastically affect its life span.