February 13, 2018. Looks like you're using new Reddit on an old browser. and it does save gas because wen your going down hill in gear while coasting or what ever you want to call it and not pushing the gas the motor is ran by the tires turning wen they spin it make the pistons move so the motor stay running with out the need for gas to be combusted. 99 % of today's newer engine dating back to the 90s are making use of something called overrun cut-off. Let's set aside fuel economy for a moment. The pump for the fluid is driven off the tail shaft. It can be kind of subtle though. When traveling in hilly country rather than "coast" such as taking the vehicle out of gear, I would abruptly close the throttle going down hill and watch the mpg stats rollup approaching more than 450mpg. My 2001 BMW has a meter that shows the estimated gas mileage in real time. My little VW diesel 2.0 works very well when off the pedal to slow down. Now here is what you are not thinking about. Interestingly, the device was sensitive enough to even show mpg loss when the drag went up from either open windows, cartop carrier, soft tires, fuel quality or A/C on. Touch the brake and it will down shift and I can get to an almost total stop without the brakes. You can usually feel it. Gasoline engines operate within a very narrow AFR (air to fuel ratio) so even with the throttle plate(s) closed as RPM increases fuel consumption increases slightly and of course with the transmission in gear the engine will hold back the vehicle speed through what is usually called "compression braking" but is really more of a vacuum braking as the engine is trying to pull air through the closed throttle plate(s). Due to this you will use 0,0 liter of fuel whereas an idling engine consumes up to 2 liters per hour. In the spring and summer I ride my bike and it takes me 80 minutes to get to work. yes it still use gas but it uses a lot more to push the gas peddle and coasting is wen you going down hill with out using any effort witch its not using effort to go down hill if your not pushing the gas peddle, don't post if you have no idea what your talking about, and there is no dumb question. http://ypdcrime.com/vt/article33.htm#t1216, http://www.popularmechanics.com/cars/hy ... l-economy/. Wasn't that called Georgia Overdrive? If you take your foot off the gas at a relatively high speed and let it coast down, at a certain speed you'll feel the engine kick back in again and the car will seem like it's coasting better (e.g. (at least for the default values in the computer of a 2002 Chevy Venture). While this is all true, it is possible to save fuel in neutral by nature of you going way faster down a hill, allowing you to maintain more speed after the road flattens out without having to apply any throttle. –Ford SHARE TWEET By. If I take it out of gear, most of the way, I can get 51MPG. Coasting down a hill might feel fine, but there are plenty of people who seem to have that nagging sense of doubt that maybe it’s not quite the best way to drive. By coasting in neutral If you had a emergency situation and needed to accelerate you might be in trouble. Since OBDII was introduced, the ECU cuts fuel when coasting in gear. Do your regular maintanence intervals, change the filters and fluids as needed.............gl. /r/Cars is the largest automotive enthusiast community on the Internet. The best way to save gas is to keep the car in its best running condition,such as tune ups keep the tires properly inflated. My car is manual shift and I was using the engine braking effect to slow down the car instead of braking. When the engine is warmed up, it flips the other way and coasting in gear saves on average 2.7% more fuel than coasting in neutral. The method the hyper fuel economy folks have come up with is to accelerate to as fast as you dare go, neutral and coast to as slow as you dare go, repeat as required or until you get pulled over for erratic driving. How to fix broken latch for car gas door? Get your answers by asking now. Still have questions? Fed-up Black Americans look to quit the U.S. Sandler's Netflix comedy dedicated to late co-star, Huge absentee vote in key states favors Dems so far. and consistently got 32mpg. Thus, coasting in gear will in 99.9% of cases use less fuel than when you slot Neutral and try and rely on momentum. Well I can tell by the difference in engine note. This is a bad idea no matter how you look at it. Hey, either braking or letting the engine slow you down. Modern fuel injection never shuts the fuel off completely, it has to keep the Cat hot, but it does lean it way out and probably uses less fuel than regular idling would.
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