Hey y'all, I recently bought my first car, an '01 Pathfinder LE. It's in pretty mint condition save a couple issues. I'm new to automotive work and I was wondering if any of y'all know what my problem is. Basically the problem is when I decelerate to a stop, from about 20km to standing there is a rattling sound. When I had it checked before I bought it my mechanic said it was the exhaust, how would I go about getting rid of the sound? It's not causing me any real inconvenience, it's just annoying as all hell I've looked through the forums but I haven't really found anything relating to my problem. Thank y'all in advance