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Originally Posted by Hammer
haha but your wrong any modern engine when you coast in gear, you are using the momentum of the car to keep the motor spinning. Since the motor keeps spinning, and you arent giving it any throttle input, the injectors turn off. The ECU calculates that zero fuel is required to keep the motor from stalling.
Gravity is turning the engine.
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ill take what ever he is having..
more like when you coast, your engine goes to idle as if you were sitting at a stop light. its still on, and still consuming gas. this is where you are seeing the 47 mpg reading, because it is idleing. this is also how people can trick the MPG meter to read better MPG than what they are getting, but you would have to do this ALOT!
your momentum goign downhill is doing nothing to the engine.
your momentum going downhill is still turning your transmission, and transfer case. the tranny will shift gears depending on speed.