You didn't say, but I assume that you have a Subaru engine (EJ22).  The
engine does not have to be running to read the stored codes.
  You connect the black plugs near the ECU and turn on the ignition.  Write
down the number of long and short flashes you see.
It is rather uncommon for a Subie ECU to suddenly go bad.

Larry A.

On Tue, Oct 14, 2014 at 8:55 AM, Jimmy Johnston <inmytree1@gmail.com> wrote:

> Hello all,
>
> The engine in my 1991 GL with a 1992 2.2 (w/ manual trans) lost power while
> cruising at highway speed.  No warning signs or ongoing issues that would
> indicate a problem.  Basically, as I was driving along, the van's engine
> lost power (i.e., it felt like I took my foot of the gas and we slowed to a
> stop), the motor continued to run as I slowed.  Pressing the gas pedal made
> no change as I guided it to the side to the road.  I was in a bit of a
> panic as we were on our way to the airport to catch a flight, I don't
> recall if I turned the key to shut it down or if it just stopped.  I did
> try to restart it, the engine turned and turned but did not start.  It
> needed towed via AAA.
>
> I do hear the fuel pump when turning the key to the first position.  I do
> have a check engine light (it did not come on prior or during the loss of
> power) to check for codes however I'm not sure how to pull codes on a
> non-running engine.  I do have a VSS (the kind hooked up to the back of the
> instrument cluster).  The ignition switch was replaced a year ago.  I'm
> leaning toward a bad ECU.  Thoughts and guidance would be very much
> appreciated.
>
>
> Jimmy
> Wilmington, NC
>