TCI Transmission is bad

I doubt it, but you can confirm what it is by checking the transmission with compressed air.

If you can get under the car (your favorite, I know) and remove the valve body, you can follow a factory Chrysler shop manual to put an air nozzle on each passage that they outline to check the functions of each circuit that the valve body operates.

The manual tells you what to look, feel and listen for.

My guess is that someone got lazy and didn't replace the 2-3 clutch pack seal or something isn't right with the front clutch pack (gaps between steel & clutch to piston snap ring, etc.)

The best thing you can do is the air pressure test, because it can rule out a valve body. If the trans functions properly, according to the test, it only requires removing the valve body and will tell you if it is a valve body.

It sounds to me like something got stuck, a seal wasn't installed correctly or something sprung apart.