sounds like your fuel injectors need cleaned and or replaced usually when a car sputters and dies it means your car isnt getting the proper amount of fuel. I would start with fuel injector cleaner to unclog your injectors then go from there. check over the injectors to see if any need replaced. Also from time to time your exhaust system can have something to do with it... if the hydrocarbons and exhaust gasses are not being circulated in and out the right way it can cause some very similiar problems! drive the car for about 20 minutes then get out and see if the tail pipe is red this is a good sign or just have it looked at real good
~Brandi~