Well fellas it's been 7mths in finding but today my dealer Baker Jackson Nissan in Houston found the rattle. I searched the boards for all solutions and never found the fix.
It was a inconsistent rotational like tapping of what sounded like a wooden dowel hitting a steel pipe in a fast manner and would last 1-2 secs.
After having it in the shop twice before for the intermitment sounds it would make he finally diagnosed a lose brake line near the fire wall. At least that was what I was told by the tech there. It was after dark when I picked up the truck so I plan to out and see where he foamed the firewall and remounted the brake line. So now all the power steering brakets, engine mounts, A/C fans, Cooling fan, hood and brake lines have been checked, adjusted and retighten.
It is a quite rumble I hear now from the Endurance sucking and pushing air via Volant and Banks.
My Thanks to "boston" Pat and Jason!
