Yeah, that's probably it. Slide under your VX on the passenger side about 2/3s the way down and look for the loose heat shield (looks the one I pictured above). Usually though, the rattling is coming from the rusted apart pipe clamps, at least in my case, this was the situation. I pulled everything off and put it back on with some new pipe clamps. Easy. Now these don't rattle.
Bart
Originally Posted by kelvin