Good to know. Thanks David.

Am still tracing down some *minor* running issues including a slight
bucking at low RPM, parking lot speeds. It was interesting to see how
"clean" the switch cam looked when I popped the TPS open.

Apologies for the hijack, glad you found the issue Darryl.

Neil.

On 5/24/12, David Beierl <dbeierl@attglobal.net> wrote:

> At 12:38 PM 5/24/2012, neil n wrote:

>>When checking the TPS with VOM (continuity at idle)

>
> The problem here is a switch that's not opening, rather than not
> closing.  Much less common, rare even.  Or a wire could be shorting to
> ground.
>
> But yes, there has to be enough slack/easy enough operation of the
> throttle cable for the throttle to close against the stop even in
> cold weather when the pedal is gently released.  Even more of an
> issue with the A/T where the cable stops at the kickdown lever on the
> transmission and has to operate that as well.  And in principle the
> switch adjustment should be made with everything shut down and
> preferably out of the vehicle where you can free up the adjusting cam
> and make sure everything is all right before you ream out that soft
> aluminum hex socket on the cam (one-switch verseion).  But when the
> throttle body is worn you often have to make the adjustment with the
> engine running.  Either way the two-switch people have it a lot
> easier than the one-switch.  Everything is big and sturdy and out in the
> open.
>
> Yrs,
> d
>
>

--
Neil n

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