I have a Digifant ignition on a 93 Jetta inline gas powered van..   When
I coast down a long grade at higher RPMs (highway speeds) there is often a
slight hesitation as I resume pushing on the gas pedal...This hesitation
can be more pronounced at high altitude, I think.  Recently, at over 8000'
elevation I felt an almost "engine off" delay of perhaps a full second when
I reached the bottom of a slope and put my foot back on the pedal.    If I
keep a very slight amount of throttle open, there is no hesitation.
Another diagnostic symptom (could be exacerbated by a small crack in my
exhaust downpipe) is that rarely, my exhaust will "Pop!" loudly a single
time when I drop throttle at lower rpms.   This 'delayed throttle response'
was particularly un-nerving as I was descending a very slick and windy
snow-covered pass recently..."exciting moments" as the engine resumed drive
after descending slowly in a lower gear...

   I have a switch that looks somewhat  thin and flat, with a
leaf-spring/bent lever looking prong that is activated by a small post in
the linkage near my throttle body.  I assume that is the throttle stop
switch.   It seems to activate (mechanically) properly...it "click" when
you just crack the throttle and 're-clicks' when you release the throttle...
  I can't decipher my 2 Bentlys (Vanagon and Cabriolet) well enough to even
figure out which switch I have and how to go about testing it.   There
seems to be a couple of very different ones used on various Digifant
systems.   Can someone guide me as to how to test this part?   Does anyone
have any other ideas as to what might be causing this somewhat troublesome
delayed throttle response?

  Don Hanson