Deceleration Fuel Cut Off

[JockoT]

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?

[Daox]

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.

[JockoT]

Thanks. I take it I am more likely to feel the jerk in a lower gear?

[Daox]

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.

[oldtamiyaphile]

Use a shallow sloping hill and top gear, you'll feel exactly when the fuel comes back in.

[Gasoline Fumes]

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.

[JockoT]

Tried it in third, this morning, and though revs dropped down from 2500 to stalling I felt absolutely nothing!

[Daox]

Was the engine warmed up? If you're still in high idle mode, it won't kick in.

[JockoT]

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.

[Hypochondriac]

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