Ok, I did plugs, wires, cap and rotor button, went to go start my Durango up and the Relay Box makes a very fast clicking/buzzing noise coming from the fuel pump and the auto shut down relay. I replaced the Crankshaft sensor on the back of the motor and then I replaced the pickup under the cap and it's still doing it. I held the trip odometer in and turned the key on and then let go and it said "chec 920, 921, 999" I am completely lost. Can you guys give me a hand? It's my only car and it's pissing me off