The mass air flow (MAF) sensor is an air flow meter
that measures the amount of air entering the
engine. The powertrain control module (PCM) uses
the MAF sensor signal in order to provide the
correct fuel delivery for a wide range of engine
speeds and loads. A small quantity of air entering
the engine indicates deceleration or idle. A large
quantity of air entering the engine indicates an
acceleration or high load condition.
Mass Airflow Sensor Operation


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