Long story about trying to find an LED test lamp this morning to find
out what is going on with the hall sensor, I found myself near walmart
with the distributor I removed last night. I returned the distributor
to the car and it started right up! Figured it must be the distributor
connections. Headed for home and before I got out of the parking lot,
it died. Started back up, headed home again, started running like
crap. Put on the flashers (only about two miles to go). Started
running better. Made all the time I could. Started running like crap
again. Barely made it up my hill and into the garage.

Shut it off. Let it cool a minute, beat on the ECU and disconnected
and reconnected the connectors between the harness and the AFM.
Realized I had committed a cardinal sin of troubleshooting, I did two
things at one time so now I would not know which thing I did, if
either, caused the effect if it happened to start. I tried it and it
did. Ran for a minute and started stumbling and then died. Came inside
and typed some more on this post. Realized I had not run a ground wire
from the distributor to ground since I didn't have one with me
yesterday but now I did, so I went out and did that. It started right
up. It ran smoothly for a minute and started stumbling. I hopped into
the passenger area and beat on the box containing the ECU. No effect
so I shut it off and came in to finish this post. I just now ran out
and turned the key again, and it started and ran strongly. I knew what
was coming, though: in a minute it would run rough and die.

It still could be the hall effect sensor, but really doesn't seem like
it. It could be the ECU, but I don't know how to test it. Could be the
temp II sensor, but I've never had a problem with that so I don't know
the symptoms. Any further guidance available, given that the real
range of symptoms are that if you let it sit, even for five minutes,
it starts right up, but then it stumbles and slowly heads toward a
stall?

Thanks and thanks to those who have helped so much so far,

Jim