HI, the car does in fact drive fine after the original sputter. I don't think it is a tranny problem at all.
As for wiring, I had a problem with the wire harness and had to fix it since the wires were all corroded and lights were not working properly.
Today when the car sputtered it didn’t stall but I turned it off about 2 minutes later then back on. No sputtering or lights on 2nd start.
Would like to get the codes but nobody around my area will do it w.o. a sizeable price tag.