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Old 01-15-2019, 07:29 PM   #11 (permalink)
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I have done a little looking into this, while in my opinion I wouldn't coast at A/T with the engine off, you can see what vehicles are able to be towed behind an RV. If approved by the manufacturer, they are towed with engine running in neutral, so I think it'd be safe to say you could coast in neutral with engine running. Maybe leave the engine off neutral coasting to the M/T guys.


Last edited by Ecodoc; 01-15-2019 at 07:29 PM.. Reason: Towed behind RV, as in flat towed all 4 wheels on the ground.
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Old 01-17-2019, 05:26 PM   #12 (permalink)
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Or if it is really that important, a high pressure coolant pump in the external cooling circuit. Powerslides have an inspections pipe port in the tailstock, not sure about current stuff.
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Old 01-20-2019, 01:09 AM   #13 (permalink)
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Originally Posted by Mohammad Abdullah View Post
I did NICEoff for only a few minutes each time but twice on a hill, I must have reached 75 mph and 4 miles all other times were about 35mph for a flat mile. Now I'm aware, the miniscule mpg benefit of NICEoff probably isn't worth the potential $100s repair.

For NICE on, is the mpg savings actually significant? I believe idle rpm is like 1 US gallon per hour + don't have to hit the gas at the bottom of the hill VS engine braking using zero gas + accelerator at bottom of the hill. Are there any conclusive results? Thanks everybody
My 2.4 accord used something like 0.21 gallons per hour, the V6 accord does around 0.34. Yes, the savings can be significant, especially if you live in a hilly area.

I did set up a test of fuel cut vs idling in neutral, but my scenario didn't really allow for much speed difference. So I went 40 mph in 5th gear and let off the gas, then tried again coasting in neutral. I didn't have much of a run up area, so it could have been enriching fuel. My car also has rev hang, so it didn't drop to idle right away when coasting in neutral. Both tests I let the car go from 40-22 mph, which is where 5th gear will return fuel. I tried to arrive at the same spot as well by maintaining speed for a little bit before fuel cutting.

Coasting in neutral was around 60 MPG, in gear was around 70 MPG. The test was flawed as I really needed a larger run up area, among other things. Ideally I would also downshift and continue fuel cutting in lower gears until a minimum speed, but the scangauge doesn't necessarily catch quick transitions in fuel consumption. Instead i'll see if I can redo the test on a higher speed road, doing a 50-30 mph test in 6th gear vs neutral. Maybe 5th gear as well.
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Old 01-20-2019, 01:22 AM   #14 (permalink)
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When did you get a K24 Accord?

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