toss the throttle body completely?

[DeWitt Harrison]

At 01:59 PM 1/30/01 -0500, Huw Powell wrote:
>On Tue, 30 Jan 2001 09:47:25 -0800 (PST), jim green wrote:
> > I guess this might work if the car is in neutral and
> > is allowed to rev up really fast, but picture driving
> > in 5th and opening up the throttle, the engine can't
> > rev up very fast, and gets a huge dose of fuel all the
> > sudden.  The air sensor plate does one thing, it
> > senses air flow.  The amount of air flowing past the
> > plate depends on RPM's and the position of the
> > throttle body.
>
>that's it, I knew there was a dark side to that theory!
>
>Also, of course, the WOT and idle switches are mounted on the TB.
On acceleration, it does seem intuitive that air would lag fuel
producing a transient rich condition, but that could be a good
thing like the "acceleration pump" on venturi carburetors.
It's also interesting to consider throttle lift. You would need
a strong spring or the like to push that plate back down
against the powerful pumping force of a high reving engine.
In fact, the default configuration might be WOT.

DeWitt Harrison
Boulder, CO
88 5kcstq