You may have heard a mechanic or a car-loving friend describe a vehicle as "running lean." Since cars don't have fat content, ...

In comparison, the MAF sensor measures how much air is entering the intake system and, depending on the car, can also track the air temperature. Both sensors provide important data to the ECM ...

Because a precise mixture is crucial to efficiency and clean combustion, the MAF sensor accounts for differences in air density, which varies with temperature and altitude. A failed MAF sensor is ...