03 DII with 189k miles. No warning, no symptoms pulling away like normal from a stop light and I hear a thunk and no forward or reverse gears. First thought was transfercase but when in park it will not roll. No codes, bolts are in the flexplate. Put a new flexplate on 6 months or so ago when I rebuilt the engine. At idle you can hear a whine that wasn't there before and when you shut off the engine it sounds like something continues to spin for a second or two. Thinking either tq converter failure or input shaft. Any other ideas? I'll make sure the fluid is topped off but I would think if it were low on fluid there would be some other symptoms before total failure.

 

Torque converter likely. Could be front clutch but your description sounds more like TC. Regardless it has to come out to fix. Tc and front clutch can be fixed with engine removal (advantage is you can do an engine refresh) but if it is TC ill advised to not rebuild entire trans as it likely sent debris all through the trans when it failed. Rebuild can be many times more expensive than replacement with good used trans and given the rarity of failures problably a good value to get a used one from a breaker.