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Description and Operation: Description
- Air Flow Sensor (AFS) measures the mass of intake air entering the engine and sends the signal to Engine Control Module (ECM).
- A large amount of intake air represents acceleration or high load conditions while a small amount of intake air represents deceleration or idle.
- The ECM uses this information to control the Exhaust Gas Recirculation (EGR) valve and correct the fuel amount.
 Courtesy of KIA MOTORS AMERICA, INC.
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