Last month, we kicked this series off by showing you how to save some money by diagnosing a bad MAP sensor rather than just chucking cash at new parts that may or may not fix a specific problem. This ...

O2 sensors help gauge whether the engine is running with too much fuel or air. Here's how much you can expect to pay when ...

The Oxygen Sensor (O2 sensor) is the "nose" of your engine’s computer. Positioned in your exhaust system, it constantly ...

We may receive a commission on purchases made from links. Modern cars are designed to be more efficient and eco-friendly than ever. Automakers build vehicles with a wealth of advanced features to not ...

Although I should say, replacing an O2 is about as easy as it gets-- you literally unplug it from the harness, unscrew the old one, screw in the new one, replug, done. Now, you do need an O2-sensor ...

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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 ...