[GN_Guy]

Terry, Thanks for the thorough reply.
Yes, I would try the car on and off with some long waits in between, to prevent running the battery down.
It would eventually, always, restart.
But you are right on with this being a way to interrupt power to the ECM and that the ECM would not record any error codes.

Here's what has gone on since my last post:

Initally the car would not start.
Found the fuel pump frozen up.
We got the fuel tank cleaned out and re-installed.
Pump works great, FP was good, but it still wouldn't start.
So, using the GM service manual we started troubleshooting I determined that:
1. The ECM was alive and kickin'.
2. No error codes were available
3. There was no spark.
4. The 1-4 and 5-2 coils showed ~12Kohms, but the 3-6 was open.
5. Further digging showed that the ingnition control module was getting power, but no signals were being sent to any of the 3 coils.
6. As a side note, I noticed last summer that the tachometer signal in the instrument panel was gone (this signal comes directly from the ignition control module).
Everything seems to point to a bad ICM.

So, I called Casper's and ordered the 86-87 ICM, Coil pack, adapter plate and wiring harness adapter. I'm now $400 poorer - but it should all be delivered on Thurs. I'll try to get this thing back together before I have to head back home. There really wasn't much of a choice but mod it to the 86-87 ICM setup. Ultimately, I would have to replace the 84-85 coil pack and they are scarce and expensive. It was much easier to just order all the parts from Casper's and do the mod.

Oh- I also found a place were one of the wires going to the injector harness had been pinched somewere below where the ICM mounts on the 84-85 (front - slightly right of center) engine.

Also, it seems to me, as I remember, that there were times when it would "cut out" and there would not be spark. I remember one time that I had a plug wire off trying to see if there was spark and the damn thing fired up and scared the %*#$& out of me. But, the best that my aging brain can remember is that somtimes it did not have spark. It would always start again though after some time.

I don't know if there will ever be a way to tell if any (or all) of this will fix the problem that has been frustrating me all along. But if I put it all back together and the thing runs reliably - it will all be worth it. If the problem comes back - I'll just keep troubleshooting.

At this point all I can do is wait for the parts, put it all together and try it. I'll drive it as much as I can and see if it quits again (fingers crossed).

I will study the info that you posted more and let ya know what happens when I try the car again. Probably be late Thrus or early Fri (5/8-5/9).

Thank you very much for your interest and assistance.
R/ Todd