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V-8 now a V-4

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2007 Chevrolet Suburban 1500 LT Flex fuel V4 mode

In this photo, Active Fuel Management has kicked in and 4 of the engine's 8 cylinders have been shut down. The onboard computer senses when engine load is light and deactivates half the engine's cylinders' valves and fuel delivery.

photo © Scott Gable
Hybrid Cars & Alt Fuels
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