For a couple months now when i go to start my car i dont hear my fuel pump if it starts on the first try it dies soon after in less the fuel pump comes om and i can hear it. if it doesnt start i turn the key a few times on and off and when i hear the fuel pump come on it starts perfect,and once it starts it runs great no problems im pretty sure my fuses are good and i hear the relay switch click and i dont think its my fuel pump cause when it comes on the car runs great for as long as i want 2 drive it only gives me trouble when it sits for 3 hours or more what could b the problem and i also have tried resetting the fuel shut off no luck any help would b greatly appreciated