Re: A4Q 2-stage accelerator???

[dan_masi@MENTORG.COM (Dan Masi)]

On Nov 17, 10:33pm, Ti Kan wrote:
> Subject: Re: A4Q 2-stage accelerator???
> Achille Riviello writes:
> > I have noticed in my
> > other drives that the accelerator pedal seemed to have 2 stages
> > to it.
> > ...
> > Anyone have this experience?  Can anyone explain it?
>
> Yes, my A4q feels this way too.  The 2nd stage is probably due to
> the secondary throttle butterfly opening, greatly increasing the
> quantity of air intake into the engine.

Exactly.  The throttle cable connects to a cam which operates
only the primary butterfly during the first third or so of
throttle application.  Once the throttle hits 1/3 open, the
cam engages the secondary, so at this point you suddenly are
fighting the springs of both the butterfly valves.

Dan Masi
'96 A4Q