TCU Codes PLEASE

[TBOMB]

I have a 92 Accord LX A/T with transmission error codes.
Here's the problem. If I drive the car, turn it off and then start it back up in less that 15min or so, it cranks but won't start and flashes D4. If I let it sit for a while it's fine.
I pulled the codes but nobody will give me the list of definitions. I would like all of them if possible but if not I would be happy for now with the ones I am getting which are 7, 8, and 12. I also got a 4 one time time several weeks ago but not since. I clear the codes and get nothing again until the problem then I get the same three.
PLEASE, I am at the end of my rope here and need help. Dealers seem to be VERY tight lipped about the codes so I have no choice but to bring it in which I am not willing to do for something simple like a solenoid (if that's what it is).
FYI, I have already replaced the TCU so unless someone is ABSOLUTELY sure that's it, I don't plan on forking that money out twice.