06-26-2017, 02:10 PM
|
#1 (permalink)
|
Master EcoModder
Join Date: Jun 2017
Location: Scotland
Posts: 654
Thanks: 36
Thanked 137 Times in 101 Posts
|
Deceleration Fuel Cut Off
Does the electronic fuel injection on my 1.2 i-DSI Honda Jazz/Fit GD-5 have a "shut off on overrun" and if so, above what rpm does it work?
|
|
|
Today
|
|
|
Other popular topics in this forum...
|
|
|
06-26-2017, 02:31 PM
|
#2 (permalink)
|
Administrator
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203
Thanks: 2,501
Thanked 2,587 Times in 1,554 Posts
|
I'm sure it does, and it normally starts spraying fuel around 900-1500 rpm. If you have it in gear and coast down, you can feel the jerk as it kicks back in.
|
|
|
06-26-2017, 03:24 PM
|
#3 (permalink)
|
Master EcoModder
Join Date: Jun 2017
Location: Scotland
Posts: 654
Thanks: 36
Thanked 137 Times in 101 Posts
|
Thanks. I take it I am more likely to feel the jerk in a lower gear?
|
|
|
06-26-2017, 03:43 PM
|
#4 (permalink)
|
Administrator
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203
Thanks: 2,501
Thanked 2,587 Times in 1,554 Posts
|
Yes, but it'll also be at a lower speed in a lower gear. You should still be able to feel it in a higher gear.
|
|
|
06-26-2017, 09:11 PM
|
#5 (permalink)
|
Master EcoModder
Join Date: May 2009
Location: Australia
Posts: 1,510
Thanks: 325
Thanked 452 Times in 319 Posts
|
Use a shallow sloping hill and top gear, you'll feel exactly when the fuel comes back in.
|
|
|
06-27-2017, 12:35 AM
|
#6 (permalink)
|
Too many cars
Join Date: Oct 2009
Location: New York State
Posts: 1,597
Thanks: 1,352
Thanked 797 Times in 475 Posts
|
I like checking in first gear. Much easier to feel the fuel kick back in. Also safer to be staring at the tach at lower speeds.
__________________
2000 Honda Insight
2000 Honda Insight
2000 Honda Insight
2006 Honda Insight (parts car)
1988 Honda CRXFi
1994 Geo Metro
|
|
|
06-27-2017, 02:05 AM
|
#7 (permalink)
|
Master EcoModder
Join Date: Jun 2017
Location: Scotland
Posts: 654
Thanks: 36
Thanked 137 Times in 101 Posts
|
Tried it in third, this morning, and though revs dropped down from 2500 to stalling I felt absolutely nothing!
|
|
|
06-27-2017, 08:30 AM
|
#8 (permalink)
|
Administrator
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203
Thanks: 2,501
Thanked 2,587 Times in 1,554 Posts
|
Was the engine warmed up? If you're still in high idle mode, it won't kick in.
|
|
|
06-27-2017, 11:30 AM
|
#9 (permalink)
|
Master EcoModder
Join Date: Jun 2017
Location: Scotland
Posts: 654
Thanks: 36
Thanked 137 Times in 101 Posts
|
It had warmed up and tick-over was about 700 rpm, but I'll try it again after a good few miles when engine is really hot.
|
|
|
06-27-2017, 06:53 PM
|
#10 (permalink)
|
EcoModding Lurker
Join Date: Jun 2017
Location: USA
Posts: 16
Thanks: 5
Thanked 0 Times in 0 Posts
|
I have a 2000 accord automatic transmission. I use the Torque app with a blue tooth OBD2. Torque has a fuel consumption display. It shows the same amount if I'm coasting in gear or in neutral so it looks like I don't have DFCO. Any other way to see if my car has DFCO
|
|
|
|