At 05:52 PM 1/24/2011, Scott Daniel  - Turbovans wrote:
>if the throttle switch stays closed with too much open throttle ..
>say you want it closed at zero throttle but breaks contact at 5 % throttle ..
>if it goes to say 10 % throttle before not making contact..
>you get bucking at very low throttle openings.

That's what I meant by "fails to open"

>You want it to make contact as close to zero throttle as you can
>..AND ...every last time the throttle closes ....it must make contact.

On the 1.9l, where the ECU deals strictly with fuel and the idle stab
is taken care of by advancing the timing, I'll bet a nickel that
there's no way to tell without instruments whether that switch closes
at closed throttle or not, and that the only deleterious effect if it
doesn't is slightly lowered mileage (because the decel fuel cutoff
isn't operating).  Totally different on the 2.1l, of course.

Yours,
David