1995 Chrysler Le Baron fuel injection problem?

Engine Performance problem
1995 Chrysler Le Baron 6 cyl Automatic? Miles

Car hesitating, skipping, stalling *whatever you'd like to call it* while I'm driving (at any speed) like its not getting the gas. It prefers to do this when I pull out in front of oncoming traffic. I'm flooring it and its like its stuck in neutral then -VROOOOM! It kicks back in and im then violently thrown forward @ 60 mph as the car takes off. I've had it to the shop 4X, and the last time a diagnosis was ran & they found nothing wrong. They said it didnt do that for them when they test drove it. They said put premium fuel in, it might be trash in my gas line -did that. No change.
I've replaced plugs, cleaned distributor cap, replaced the fuel filter & pump - and its still doing it! The next thing I was going to try was replacing the distrib. Cap and then the ignition coil, but I'm already $450 lighter because of this prob and its getting me nowhere -literally. Please help!