chrysler grand voyager 2.8 diesel 55plate auto. - chrysler voager 55plate diesel auto box fault - raysheppard

hi ,i have a problem with the auto gearbox ,when its put in to drive you have to rev it over 1100 revs for it to move ,when you let the revs off it slowly stops and it feels its in park ,it does the same in all the gears even nutural ,is this torque converter or autobox fault .i thought it could a abs fault .thanks ray.