Car Dies while Driving

Got a 1986 Fiero GT V6 2.8 when I'm driving down the road it has a rough idle runs rich and dies while I'm driving for no reason and then it takes a while before it was restart if it feels like I'm just ran out of gas is what it feels like and then it takes a while to start after I get it started it will go down the road a little ways and do the same thing over and over again and I'll replace the fuel pump fuel filter and bring a cold check and there was no codes for that Fiero nothing showed up so what will

be the problem here please help me