So that you don't have to read the whole story if you don't want to
I'll SpillTheBeans

up front ~ After a couple of hours of NonShutDownRunning & 20mis of
RoadTest it appears

as though the problem is solved ~ it will actually probably take 6mos
to a year before I'll

believe it though, because that's just the way I am ~ It was the
IdleStabilizesControlUnit/

Relay.

        I went straight to D15 on the FuseBlock but amazingly it looked just
fine ~ very slight

discoloration right @ the opening but otherwise LooksLikeNew, in fact
the whole plug looks

great ~ by the way, this Van has a VeryLarge Red/Blk wire in D23 - at
least 10 maybe 8ga.

Next I swapped ECUs & it ran for 48mins & then Shutdown. I then
swapped ISCU/R & let

it run for 58mins before deciding to take it for a TestDrive & put
7.8mis & another 1/2hr on

it before shutting down to put the original ECU back in. Than ran it
for another 1/2hr while

I put tools away & then took it for another 12.2mi TestDrive ~ It may
very well be fixed.??

        The owner is going to drive it out to MyPlace this weekend & leave it
with me so I can

do a TranyFluid change ~ hasn't had that done or even checked in
@Least 12yrs I'm told ~

2nd, 3rd & 4th are a bit whiny or yowly but 1st sounds great so we'll
see if fresh good lube

helps that @All ~ with 217,000mis on it NewTranyTime may be
JustAroundTheCorner.

        Thanks for all the help guys ~ YouBeGreat

                                                        ORR ~ DeanB