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
>