2000Town and Country Engine Sputtering

This is my first posting on the website. I have a 2000 Town and Country that is modified with a ramp for my disabled son who is in a wheelchair. The car has low mileage-only 50K and was operating well until two months ago. We have had several incidents when the engine began to sputter and had to be turned off for several minutes and restarted. Most recently, my wife and son were on Route 95 and she had to pull over and the car had to be towed and they had to take a taxi home. We have taken the van to the dealer several times and they have not been able to fix the problem. They did put in a new fuel pump but the engine is still sputtering. This problem seems to happen most often on the highway at high speeds with the AC running. Anybody have any suggestions. Thanks

This past summer I had my 2002 Dodge Grand Caravan (with 40K miles) all packed up for vacation and was pulling out my driveway when the engine really started to shake. Since I didn't have time to do anything myself, I took it to the dealer. They charged $550 to put in new: plugs, wires, PCV, and Fuel pump. They said this was a 'known' problem. My question, how can these parts be a known problem?

Have you tried doing the simple thinks like plugs, wires, PCV, fuel filter, etc? Beyond that, I'm sure the other people on this forum can suggest what to try.

Best Regards,
Stan

This is my first posting on the website. I have a 2000 Town and Country that is modified with a ramp for my disabled son who is in a wheelchair. The car has low mileage-only 50K and was operating well until two months ago. We have had several incidents when the engine began to sputter and had to be turned off for several minutes and restarted. Most recently, my wife and son were on Route 95 and she had to pull over and the car had to be towed and they had to take a taxi home. We have taken the van to the dealer several times and they have not been able to fix the problem. They did put in a new fuel pump but the engine is still sputtering. This problem seems to happen most often on the highway at high speeds with the AC running. Anybody have any suggestions. Thanks
Was there any sign of it overheating? It would seem also that it should have stored a code to indicate what was causing the problem, did they check for codes? Does it do it everytime you get out on the freeway and get it warmed up? The mechanic may need to take it for a drive and check fuel pressure etc. when it fails.