Hi...bought a used Honda Accord with auto trans. I just wanted to
know what D4 and D3 mean on the auto transmission shifter. Much help would be
appreciated.
Thanks.
OK. You know how the transmission shifts gears when you press on the
accelerator (gas) pedal? Well, your transmission has four gears. The D3 is
to tell the car to "Drive forward, starting with first gear and going no
higher than third gear." The D4 is to tell the car to "Drive forward,
starting with first gear and going all the wayyyyyy to fourth gear." There
is some stuff in there about engine rpm's and forward speed and momentum
and overdrive and stuff. Just be safe in knowing that if you put it in D4,
your car will do just fine :)
--
Brian Lewis
ac...@wnstar.com
Shawn <Gr...@unix.infoserve.net> wrote in article
<4u4i4m$l...@news.infoserve.net>...
Leaving the shifter in D3 limits the engine to the lower three gears --
i.e. the 4th gear (overdrive) will not engage. This is useful if you're
going to be driving around in the city at relatively low speeds and don't
want the engine to hunt back between 3rd and 4th gear. It's also useful
for maintaining high-rev acceleration when merging onto a highway.
It's *very* important that you drive in D4 when on the highway, however.
If left in D3, you'll be unnecessarily over-revving the engine and
getting poor mileage. One thing that's always bothered me about Hondas
and Acuras is that the shifter pulls back to D3 without having to press
the button. Confusing to those who don't know what their engine is
doing.
I wonder how many hundreds of unaware Honda drivers out there are burning
out their engines by driving in D3 on highways. Probably the same number
who have had their "recirculate" buttons on since they bought their cars
("The windows are always foggy and I have trouble breathing -- can't
figure it out"!!).
Rand
It's so that you can apply egine-braking without looking to downshift,
and not have to worry about accidently going all the way to D2. That'll
be very bad for the engine if you're above the D2 speed limit.
It's not confusing, if you forget what position it's in, look at the dash
indicator.