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Old 03-27-2013, 05:01 AM   #3 (permalink)
redpoint5
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Quote:
Originally Posted by jeff88 View Post
would it save me fuel in the long run (i.e. does the load of one cylinder powering the whole car without the "help" of the other 3 cylinders negate the savings of the other 3 cylinders being off?
Jeff
Neat idea, but not practical. Modern cars attempt maintain a set rpm while idling, and deactivating cylinders that are normally running will just make for a rough idle and either not save any fuel, or such a minuscule amount as to not be worth the hassle and rough idle.

You will also get misfire codes since the computer thinks the engine is running, but isn't detecting combustion events.
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