I am having the same problem with my 99 f350 or was i should say , it started with OD, then it started doing it shifting into 3rd now it has started doing it in 2nd , with the same power loss as original poster has , i was told it was the torque converter ( shutter ) by a couple of shops and this was a normal problem for the Power strokes from 97 to 01 and i am scheduled for replacement on the 26th , i guess my question is has anyone else had this problem and was it a problem as i was told it was ?