John, you should be able to swap them no problem.  Maybe that one was dying
and jostling it, pushed it over the edge?  I have rebuilt ones in stock for
$250 if you need one.

Ken

On Sat, Aug 12, 2017 at 7:53 PM, John Rodgers <jrodgers113@gmail.com> wrote:

> One ECU had a pigtail wire to the motherboard, the other did not. This
> pigtail is for the purposes of hooking up a Shoebox Monitor. I sold the
> van, but without the monitor system. So had to swap them out so the pigtail
> ECU did not go with the sale. Besides, I use that pigtail ECU all the time
> in trouble shooting.
>
> John
>
> On Aug 12, 2017 16:33, "kenneth wilford (Van-Again)" <kenwilfy@comcast.net
> >
> wrote:
>
> > Maybe the ECU plug isn't seated properly?  Try moving the ECUs back to
> > their prospective vans?  Why did you swap them in the first place if
> > everything was running great?
> >
> > Ken
> >
> > On Sat, Aug 12, 2017 at 5:14 PM, John Rodgers <jrodgers113@gmail.com>
> > wrote:
> >
> >> I have two vans. '88GL & '91 Carat. Van1 and Van2. Van2 ECU had a
> Shoebox
> >> testpigtail on i. Van1 did not! Both engines ran perfect. Now, after
> >> installing Van1's ECU into VAN2 the Van2 will not start at all. Won't
> even
> >> sputter,. Any one with ideas as to what this is about!?
> >>
> >> John
> >>
> >
> >
> >
> > --
> > Thanks,
> > Ken Wilford
> > John 3:16
> > www.vanagain.com
> >
>

--
Thanks,
Ken Wilford
John 3:16
www.vanagain.com