Hey all, I am new to the forum and new to Ford. I just bought 1 2004 fx4 5.4 liter super crew. It has 100,000 miles. I have noticed that when I start from a complete stop and accelerate slowly there is a slight vibration/rattle that seems to come from up under the drivers dash area and lasts for less than one second. I never does it except when accelerating from a complete stop. Is this anything to be concerned about or is this just normal sounds for this truck. Thanks