Hi Karl,
The throttle switch that I have played with, has a small microswitch which is
closed by a double cam on the throttle butterfly valve shaft. The microswitch is
supposed to open with the aid of a spring built into the switch housing. On the
side of the housing holding the spring is a small hole. That is where dirt got
into my switch and kept it from working consistently. DON'T wash it out with
solvent. This only strips it of lubricant. Try blowing out the dirt. I added some
spray teflon (Scotch Guard) and used a needle point to manipulate the spring. The
spring went ping and every thing worked thereafter.
Larry

"Karl F. Bloss" wrote:

> Just diagnosed another '87 with a sticking throttle switch within about 30
> seconds of hooking it up.  Julie Olson complained of intermittent poor idling
> when cold and we were wondering whether it was the temp II or the throttle
> switch.  It was the latter, but only intermittently.  Probably crud in there,
> but now she/Dale know what too look for.
> Just get a Digitool.
> -Karl