After about 5 to 10 mins of driving, engine stops,re-starting is hard, pls why?

What is your question?

when the car is on motion, after may be 5 to 10 minutes of driving, the engine stops immediately, trying to start becomes difficult. when the car eventually starts, movement is slow,climbing the smallest hill is difficult. i have changed fuel pump but no way out. if the car is parked for may be an hour or two, it will start again and move for another 5 to 10 minutes before it happens again. during this process, the car shakes and throttling is slow. please repair pal what do you think is the problem. Thanks.