View Single Post
Old 08-18-2008, 09:11 PM   #31 (permalink)
Old Retired R&D Dude
Join Date: May 2008
Location: Woburn Mass USA
Posts: 701

Little Red - '12 Toyota Prius c 2 Two
90 day: 57.82 mpg (US)

"Whitey" Bulger - '14 Toyota RAV4 LE
Thanks: 10
Thanked 18 Times in 17 Posts
Originally Posted by bbjsw10 View Post
A engine-braking situation normally shuts off the injectors on its own, "Deceleration Fuel Cutoff" leaving key on and coasting down that hill in 5th or 4th would kill injectors. I could be wrong but I know most fuel injected cars do this. Mine does and it is a 91 Metro I am sure a Honda would be the same a little more advanced than my car is.
My 1999 Honda CRV coasts right into 'Fuel Cutoff' when I take my foot off the gas on a good hill (while in 4th or 5th gear).
The Scangauge2 starts displaying 9999.9 MPG.

If I'm coasting down a smaller hill and engine braking is just too much,
Or, I feel the need for speed!! Just shifting into neutral and
letting the engine idle nets me around 50 to 70 MPG while coasting at 30-40 MPH..

Coasting while in Fuel-cutoff is super simple and can be done without doing any wiring..

That SC2 is a great little device for showing how much gas you are wasting going up hills too fast.
I've been using it with the Cruise Control for highway driving.
When I see the display dropping down around 20 MPG going up a hill,
I back off with the CC down button. On the down hill part, I use the
CC up button to apply more speed until I see the MPG hit a peak,
or until I hit the safe speed limit.

I love good long hills where I can hit 65 MPH while getting 40 to 70 MPG..


Current ride: 2014 RAV4 LE AWD (24 MPG)

Wife's Pizza Transporter
  Reply With Quote