Quote:
Originally Posted by DifferentPointofView
Didn't someone do a test on this site that concludes that the engine HAS to use fuel in neutral to keep the engine from stalling because the drive line is no longer spinning the engine, so in neutral the engine uses fuel to keep it running? If I'm not mistaken, but I remember someone doing a scangauge test and coasting in neutral uses so much fuel per hour and coasting in gear doesn't. Correct me if I'm wrong though.
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That is correct. Neutral is driveline-disconnect, so it requires fuel to keep things moving. ~0.5 GPH for my car.
From my shop manual, "Fuel Cut-off Control: During deceleration with the throttle valve closed, current to the fuel injectors is cut off to improve fuel economy at speeds over following rpm: B18b1 engine: 970 rpm."
Experiments have confirmed.
RH77