i have a 2002 dodge ram 1500 and it shakes severly when i put it in gearin the morning after i fill up with gas the previous night. and then when i go to give it a little gas i cant get it to break 1500rpms & then it starts to die and then revse up a little and does that over and over again.. and then about two hours later it will fire up fine and have no problems. ive taken it in to plenty of shops and they cant find anything wrong w/ it.. any help would be apreciatted!

thanks, corey