Thread: Low mpg
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Old 05-20-2013, 03:04 PM   #36
polarstorm
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Garage
Quote:
Originally Posted by Marchy View Post
When you're coasting in gear, off the gas, the ECU will cut fuel going into the engine 100%, because momentum of the car combined with the engaged transmission will keep the engine spinning. If you go into neutral, then the ecu has to keep the engine idling to keep it from dying.
It still burns gas at the rate that the rpm needle indicates.. you're just not making the engine work so it falls below 1k..

Careful driving in neutral, you effectively lose control of the car if you're distracted and depending on conditions.. my uncle died that way going down a 30 degree incline, couldn't put it back in gear because the tractor was loaded (a few tons) and it had picked up too much speed..
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