Tyler,
  You didn't mention the idle/WOT switch at the throttle body.  Is it known
to be working properly?

I would try driving it until it screws up and then, while still moving,
turn the key far enough to shut down the ignition but not lock the
steering.  Do not declutch or brake or anything.  If it runs OK when you
turn the ignition back on, you have temporarily solved the problem by
restarting the ECU.  This would indicate that the problem is with the
electrical signals going into the ECU.  Things like the O2 sensor, Hall
sensor at the distributor, idle switch at throttle body, or any associated
wiring.

Have you tried running with the O2 sensor disconnected?

Larry A.

On Sat, Apr 16, 2016 at 1:12 PM, Tyler Hardison <tyler@seraph-net.net>
wrote:

> The engine behaves like it has a very extreme rev limiter in place. If I
> press in the clutch it dies. From there I can restart the engine like
> nothing happened.
>
> The AFM was replaced June of last year.
>
> O2 sensor around the same time.
>
> Coolant temp sensor in July of last year.
>
> Cleaned and tested the auxiliary air valve last month.
>
> New throttle body gasket last month.
>
> New fuel filters last month.
>
> New fuel tank two weeks ago.
>
> This problem feels electrical to me. Fuel starvation should cause poor
> running like a lean condition. Right?
>
> On Saturday, April 16, 2016, Loren Busch <starwagen@gmail.com> wrote:
>
> > ​RE: Engine Stalls
> > Tyler, could you give us a little more details about how the engine
> > stalls.  Just quits dead?  Or stumbles but keeps running?  If the later
> > then you may be dealing with 'Vanagon Syndrome'.
> > BTW, what engine.  Stock 2.1L or 1.9L?
> >
>