'88 2.1l
Hoping the list can help me once again
Tried to start the van today after it had been sitting at work all day.
  Would turn over and start for a brief second and then die.  Feathering
the accelerator while it started for that brief second didn't help and
I was never able to get it started.  Occasionally it would die and then
briefly act like it was going to catch, then would make an audible
"cough, cough" and die.
I know I'm getting gas by the strong smell and the brief start.
Confirmed fuel pump is buzzing and fuel pump relays are clicking.
Can only assume getting spark due to the brief starts plus pulled the
plugs and they're not wet and plug wire connectors are warm.  Seems
like I'm getting brief combustion.

Going to dive into checking Hall Sender tomorrow but recently inspected
and did not find cracking or separation at the connector.

RECENT WORK
Properly adjusted Throttle Position Switch
Cleaned and lubed Throttle body
Checked and cleaned Idle Stabilizer valve.
Checked for corrosion at Idle Stabilizer Control Unit - none found
Cleaned and replaced (as needed) grounds under the coil and on left head
Added additional 10 gauge ground wire from firewall to left head
Temp II replaced 5 months ago but have not checked according to Bentley
Checked AFM - BTW is resistance between 2 & 3 supposed to test out like
a bell curve while moving the flap? (increasing to a peak then
decreasing)
Idle before today was rock solid.  No hunting at all.

Would appreciate any suggestions on other culprits

Thanks
Barrett Willet
'88 Wolfsburg