I am having a problem with my grand cherokee its a 95, 5.2L with quadtrac (all time 4wd). It seems to jerk violently... like whiplash violently at times. when I accelerate quick like any acceleration speed over 2100rpm or so. It just jerks like crazy but if I let all the way off the gas its fine. I am thinking transmission, just wanted to get a few other opinions before I end up spending a ton of money on that when it might not even be the problem. I have already checked all the basics also.