Caravan--check engine light & engine miss

I have a 99 Grand Caravan w/160000 miles on it. Usually runs smoothly but sometimes stalls when gas pedal is pressed. Sometimes jerks...lacks speed. The engine check light pops on when the engine hesitates. Scary when driving @ 70 mph and the engine suddenly skips. Sometimes I get a few blocks from home, stop at a traffic light or slow down, and it stalls altogether. I've replaced tranny, both o2 sensors, throttle body sensor and solonoid pack. I keep the oil changed. Don't recall the codes that popped up before I had all this stuff done. Thought the new tranny would fix it, but the same evening I got the thing from the shop...started doing the same thing and everyone (even the dealer) is at a loss.

Any ideas... before I take a bat to this thing?? Thanx!

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Well could be a fuel filter, or pump but I'd check this first before you waste any more money:

http://www.automotiveforums.com/vbulletin/showthread.php?t=398005

http://www.automotiveforums.com/vbulletin/showthread.php?t=419359