Need help with an OLD's Cutlass

Sorry about this but I haven't found the answer in the Old's area so I am trying here.
I have a 1990 Olds Cutlass Supreme with a 3.1 engine, I had the tranny replaced and ever sense I have had a problem with the engine dieing when I am driving it.
I can be going down the road just fine and sometimes when Im accellerating it will stall out, it acts as if the fuel is shut off and dies, sometimes I can put it into nuteral and restart it other times it won't restart until I stop and try it,
So far I have replaced the throttle position sensor,I forget the name of it but the sensor/controler above the throttle poss sensor, the fuel pump relay, plug's and wires, the oil press sensor, tried unplugging the TCC, checked engine codes and found non.
Anyone have any other ideas. PLEASE

i would have suggested unplugging the TCC but you already did that, how long since you replaced the fuel filter? on second thought what do you mean by Tried unplugging the TCC?? if you can get it unplugged try that, if not i would suggest you return to the Transmission shop Keep us informed!!,Good Luck!

Ok for the record
I did unplug the TCC, that did make a differance with a problem that I had with the tranny not knowing if it should be in drive or overdrive and I did find out that I will have to bring the car back to the shop for the shift points to be re-adjusted, but as for the problem with it killing, I took it to work today and put about 100 miles on it about 75% of them highway miles and it only killed once but I had to pull off and wait about 10 min before it would re-start, when I checked I had both good fuel pressure and spark, after it did start again I had no problems the rest of the day

you could possibly have ignition module shorting out or power wire. maybe wire pinched when tranny was replaced. it's obviously an intermitent problem and that is the reason for no trouble codes.
Good luck.

Thanks for the suggestion
but that was one of the first things that I looked for along with and sensor wires that might have been bumped and knocked loose,
I am wondering if it was caused from the tranny sitting for a while before it was installed and that with driving it has loosened because I have put on about 5000 miles sense my first post and it had not done it again after I put the first 1000 miles on it.