A few weeks ago I had the fuel pump in my A4 stop working on me. After replacing the fuel pump, strainer, and fuel pressure regulator the car ran fine for a few days. Now the car starts up and immediately shuts off. I can press on the gas pedal when I start the car and it will start and run, but when I press the gas pedal it seems like the car is hitting fuel cut. The car is spitting and sputtering and bogs out and dies. Before this problem occurred I did have a engine code of P0422. The car was running fine before I erased it. Now I have another engine and I do not have a scan tool to fond out what the code is. Can anyone help me diagnose my problem.