Your engine needs a steady stream of clean air to function properly, and it's the job of the mass air flow (MAF) sensor to measure and regulate the amount of clean air entering the intake. The engine ...

Mass air flow sensors fail most often in cars but a $20 air filter replacement every 12,000 miles prevents the $250-400 repair bills most drivers face.

Every sensor on or in a computer-controlled car or truck talks to the “on-board PC” in a kind of language you’ve never heard or seen. All of the inputs are in a voltage-speak and are all numbers. All ...