Air Flow Meter/Sensor: Description and Operation

The vane air flow meter measures air flowing into the engine and is mounted between the air cleaner and throttle body assembly. The meter contains a movable vane which connects to a potentiometer. As air flow through the meter, the movable vane and potentiometer change position and provide an input to the electronic control assembly with vane position information. The ECA can then translate vane position information into the volume of air flowing into the engine.