My car has been running fine until today. I felt it jerk when I was driving down the highway. I pressed on the gas pedal but it wouldnt pick up speed, then a few seconds later it was fine again. Driving down the highway, it would keep on doing this. When I stopped or slowed down and had to shift it does it also. I took it to auto zone and they gave me 2 codes, 1457 and 1259.