1997 Dodge Caravan

Transmission problem
1997 Dodge Caravan 6 cyl Automatic 152000 miles

Will I have this van for only two month and we ahd it in the shop 4 time. First they say that the things that holding the steering wheel belt borke so they replace that. But I had someone place the tranmission plate, oil change and all other thing does to it. But when I took it on the high way the speed was fine for 15 min but it will not go up to 55 you will heard it making all these noise, but when I did hit 55 mph the speeed drop so fast theat I pull over but no one tell me nothing about the car like what is really wrong and one thing it stop reverse?