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Home >> Buick >> 2005 >> Century Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Description and Operation >> Fuel System Description >> Fuel Metering Modes of Operation
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Fuel Metering Modes of Operation

The powertrain control module (PCM) monitors voltages from several sensors in order to determine how much fuel to give the engine. The fuel is delivered under one of several conditions called modes. The PCM controls all modes.

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