2002 F350 Super Duty 7.3 Diesel.Transmission trouble. Came off interstate - took foot off throttle at yield and hit gas as turn was clear. Did it fast and felt like hit wall. Immediately lost transmission engagement. Trans did not reengage until below 20 MPH. Tried to speed up and disengaged at 20 to 25MPH - just free wheel - engine wine. Went to 1st gear and would come up normally. Shift to 2nd and could get up to 30MPH and probably higher - didn't push. Shift to drive and trans disengage. No trans fluid leakage and level looks good and clean. Ideas on what to look for? 126K miles.

 

Look for broken parts inside the transmission.