I have a 97 f-150 4x4.Sometimes when I accelerate from a dead stop,I feel a shudder,( vibration).Feels like its coming from the rear somewhere.After i am up to about 20 mph it goes away.Does anyone else ever experiance the same.It drives me crazy.Any info would be appreciated.

 

I had the same problem with my 99 ORP. Mine has a limited slip. Took to dealer and they put in a Ford addititive. No more shudder. Might contact your dealer and ask about the limited slip addititive. Hope this helps.