My truck has a metallic tapping that occurs when coasting. Can't hear it when accelerating or when at steady throttle. I heard it when there is a curb or wall to reflect the sound. Cannot hear it when idleing at a stop. If it was a cracked flexplate it would still make the sound at idle in park, right ? I don't feel a clunk or anything, just hear it when coasting to a stop. Any ideas will be appreciated.

 

Whoops, disreguard, found a bad u-joint on the front driveshaft.