downhill on gear fuel consumption

[Hammer]

Originally Posted by Camou2

The only way any engine cannot consume fuel going down a hill is to turn it off! Did you think they free spin or something?

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.