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Home >> Ford >> 1990 >> LTD Crown Victoria S, 5.8 G >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 5.8L >> Operation >> Engine Controls >> Air/Fuel Controls

Air/Fuel Controls

The MCU provides current to a feedback motor on the carburetor, also known as a Feedback Carburetor Actuator (FBCA). This motor extends and retracts a shaft which alters an air-bleed orifice in the carburetor.