Finally got the van to throw a code.
I pulled 2 codes, first I got...
P0102 - MAF / VAF Circuit Input Low.
This is the code it threw before and on the strength of that my mechanic
replaced the MAF at enormous expense.
P1504 - Manufacturer controlled vehicle speed, idle control, and
This one was *probably*
in there from when I pulled the IAC connector
and drove it around a bit and let it stall. So probably ignore this one.
Anyway, does this help at all?