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.

A mass air flow sensor is one of the numerous tiny widgets and gewgaws that make up a modern automobile's electronic fuel injection system. In the MAF's case, it tells the car's computer how much air ...

Trouble codes. They're like the math problem the teacher puts on the chalkboard. You follow along, everything seems to make sense in a definite, orderly fashion and then, you try it yourself without ...