I have a 1989 lx 5.0 vert bone stock. My problem is :With 1/2 tank or less of fuel when I go around a corner (right or left) the engine sputters and almost dies, like its running out of gas. What do you guys think it is. I have a new pump, as soon as I get to empty the tank will come out to change the pump any ideas would be greatly appriciated. chris