Re: ****fting from drive to neutral when moving

On Apr 29, 3:10 pm, Tim <jmeth...@[EMAIL PROTECTED]
> wrote:
>
> Does it glide better in neutral? Are the RPMs less.
>

Back in the earlier days of fuel injection, ECMs would shut off fuel
completely during deceleration.  Leaving it in gear while slowing down
would basically let the car's momentum keep the engine spinning with
no fuel use at all.  Unfortunately, that causes a spike in NOx
emissions so new cars keep dumping in fuel even when decelerating.
Even worse, my '99 Grand Cherokee steps up the idle control motor when
I ****ft down into 2nd - conveniently eliminating the additional engine
braking that I wanted.

> I was just reading about hypermilage-ing and wanted to see if that would
> help at all.

Don't really know.  Try it both ways and find out.  Get a car with a
manual transmission.  That makes a real difference.

For mileage, make sure your tires are inflated properly.  That makes a
huge difference and air is cheap.