Air Flow Meter/Sensor: Description and Operation

Air Flow Meter/Air Intake Sensor:

The air flow meter measures the amount of air entering the intake manifold to provide the DME control unit with precise air volume information.

The intake air flow is measured by a spring loaded flap which is connected to a potentiometer. As air is drawn into the engine, the flap is deflected which causes the wiper contact of the potentiometer to move. The potentiometer signal represents the air volume entering the engine.