As I was driving a while ago the car shut off and would not turn on again, it was not the battery. I brought it to a shop and was told that it was the fuel pump. The fuel pump was changed along with the rpm sensor and it started and ran. The next day as I was driving i noticed that when I would hit the gas the car would make a loud rumbling noise and would not accelerate. I did not have time to bring it in.

Today as I was cleaning snow off my car I turned it on to let it run and as it was running it began to rough idle and shut off. Now it will not turn back on.

The mechanic gave me these codes :

P1531 Cam
P0322 Crank
P1602 Terminal 30
P0321

Ive looked them up but I need help on what these problems can be because I've spent enough money as it is and the problem has not been fixed. Help! Ive spent 6 years maintaining this thing with little to no problems but this has stumped me.