hello, i have a honda accord ex 4 doors 2001 please help me!!

I recently had problems with my car , symptoms is that when i stop in at a traffic light , the car start shaking and turned off
I put the computer to find out the codes and it shows that the KNOCK sensor rank 1, and the oxygen sensor , and still had the same problems , and then you change the spark plug wires; and still the same problem, it was still shutting down , and the mecanic told me that i need to changed the idle control valve, after i did this, the rpm's were normal and I still having the same problem, and finally , I replaced the fuel pump and filter, and the car was running well , then he turned off, and it turn back on....so i don't know what is the problem
please I need your help and tell me what else I can change in this car
Thank you