Finally fixed it!  Fuel pressure was OK (my guage was bad).  Checked a
number of things, finally swapped mass air meter from a friend's van.
Started and ran fine.  He had my spare unit, so he was ordering another for
his van.  Does anybody know of a rebuilder for these?  I've been able to get
rebuilts for about $125, but all this one needs is the resistor board.
Thanks for the hints on this, everybody.
Steve Sandlin
www.steveslockshop.com
'84 Wolfsburg Westy
'79 Transporter
'00 New Beetle