View Poll Results: a or b?
a
20
48.78%
b
21
51.22%
Voters: 41. You may not vote on this poll
better way to coast?
Joined: Apr 2007
Posts: 1,025
From: Behind the lens...under the pillow
better way to coast?
So you're slowing down for a red light/stop sign in your manual fit...
do you..
a)throw it in neutral
or
b)leave it in gear until you stop
?
which is better for mpg as well as longetivity of the tranny?
do you..
a)throw it in neutral
or
b)leave it in gear until you stop
?
which is better for mpg as well as longetivity of the tranny?
Member
Joined: Apr 2008
Posts: 160
From: Montrose, CA
As recorded in other threads, the ScanGauge shows that the injectors are shut off when coasting in gear above 1500 rpm. When in neutral, the rpm drops to idle, and the injectors pump fuel to keep the engine from dying.
Coasting in gear FTW!
--Barry
Coasting in gear FTW!
--Barry
Frequent FitFreak Poster
Joined: Mar 2007
Posts: 588
From: Lehigh Valley, PA
Yes but there are other factors involved that favor neutral.
Member
Joined: Jul 2007
Posts: 1,584
From: Memphis, TN
I just shift to Neutral then clutch out.
Engine wear is the big factor, as far as I know. Correct me if I'm wrong.
Last edited by cojaro; May 17, 2008 at 12:25 PM.
Member
Joined: Mar 2008
Posts: 1,659
From: Wisconsin
How do you coast but keep the RPM's above 1500?
New Member
Joined: Aug 2007
Posts: 12
From: Bangkok, Thailand
Coasting in gear is also known as DFCO (Deceleraion Fuel Cut-Off), it's a feature of the engine management, so it was consciously designed by the manufacturer to work this way. And the reasoning makes sense, why use fuel when you have the car's momentum to keep you going?
You can also use it when going down hills, just like engine braking, really.
We have a real fuel efficiency guru on our forum, he's done a good writeup about this, if you want to check it out:
Using DFCO to increase your MPG - Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
mods, if this is not cool please feel free to remove this post, but I'm sure everyone likes to know a new trick to help save fuel/money
You can also use it when going down hills, just like engine braking, really.
We have a real fuel efficiency guru on our forum, he's done a good writeup about this, if you want to check it out:
Using DFCO to increase your MPG - Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
mods, if this is not cool please feel free to remove this post, but I'm sure everyone likes to know a new trick to help save fuel/money
coast in gear not only to save fuel, but you still have immediate control
to manuver your car in case you need to.
i typically h&t down to 3rd, but at times down to 2nd approaching a
stop when i need slightly more braking power. i just under blip on
purpose for those instances.
to manuver your car in case you need to.
i typically h&t down to 3rd, but at times down to 2nd approaching a
stop when i need slightly more braking power. i just under blip on
purpose for those instances.
Frequent FitFreak Poster
Joined: Mar 2007
Posts: 588
From: Lehigh Valley, PA
That pretty much sums it up. Also for the transmission too.
Member
Joined: Oct 2007
Posts: 388
From: Amish Paradise, PA
The poll isn't really valid since it depends what's "up ahead". If you are planning to come to a stop then leave it in gear, using DFCO. If you expect to re-accelerate then neutral preserves momentum. Whichever keeps you from using either pedal the most.
Member
Joined: Oct 2007
Posts: 388
From: Amish Paradise, PA
Many hypermilers have been doing that for thousands of miles with no problems. If you are smooth, it's no more wear than starting off from a stop.
