Well, I've done almost everything now and I'm getting close to giving up.
First, let me summarize what is happening again:

While driving, van "almost" dies.  By this, I mean the rpms drop to about
500-700 (no tach) and I get NO response from the throttle.  While many of
the suggestions made are quite good (and all are appreciated!), it seems
most people are not fully understanding that I get NO response from the
throttle.  When this is going on and I'm in the engine compartment and I
play with the throttle, I can hear the flapper in the AFM moving, but
still NOTHING happens.

Then, usually (but not always), if I turn off the van, and then back on,
everything is immediately back to normal.  If its not back to normal
immediately, I can usually wait a few minutes and then turn my van back on
and it runs again.

I'm 99% sure it is an electrical problem, but dont' really know how to
find it.

I remember I had a slight wiring snafu a couple years agoe with the
harness touching the muffler.  I suspected that the mechanic just taped
over some problems so yesterday I opened up the wires and it looked like
only the casing got melted (all the wires "looked" fine).  I then tugged
and wiggled each wire both when running good and when running wierd as
above.  In both cases, wiggling these wires did nothing.  So, I figured
that the wires are probably fine in this location.

I also put in a "new" (used) ECU and that didn't change anything either.

I'm running out of things to try.  I'm going to call my mechanic and maybe
take in in, but I can't imagine he will have any other ideas.

Let me list again the things I've now done to date, including the dates.

- temp II sensor is quite new (replaced 8/01)
- new ignition switch (12/01)
- new O2 sensor (4/01)
- new hall sender (11/01)
- cleaned all grounds in engine compartment (10/01)
- replaced AFM with a new one (possibly rebuilt?) (10/01)
- replaced throttle switches (both of them, 10/01)
- new fuel filter (7/01)
- new plug, cap, roter, wires (4/01)
- idle stabilizer (probably 1997?, but it can't be bad can it?)

I'm at a loss.  I guess I need to start checking every wire, but this
worries me because the problem in intermittant - so when I check the
wires, they will probably be fine.

Blake
84 Westy
SLC UT