Shuts off when in drive or in reverse

Will it shut off in neutral? If not it sounds like you have a torque converter clutch that has fallen apart which means the transmission will need to be removed and the converter replaced. To be sure please make a short video using your phone and upload it in your response so I can tell for sure. Here is a video of what need to be done:

https://youtu.be/3vJAojsrfuU

Please run down this video and report back.

Cheers, Ken