This is a wierd one as it's not the fuel pump which is located below the trunk but when I turn my key to the on position with the engine off there is this sound kinda like a wooop going up in pitch then stops. My pumps fine it quietly hums. What would cause this. Could it possibly be a pinched fuel line? I did just replace the fuel filter as it was amazingly the original one from the factory with a oem one from advanced Auto.