When ever I idle I hear this rattling sometimes like a rock inside a plastic can. Then other times, I notice a vibration in the brakes when I am stopped.

I uploaded a wav file to see if anyone can help identify the issue, its driving me nuts. At about 2 seconds and 9 seconds I dropped my phone but you can hear the first rattling noise starting at 16 seconds. Then around 33, you can hear when it vibrates in the brakes.

VN-20121002-00004 by soundcloud-19 on SoundCloud - Create, record and share your sounds for free



Car is an 01 Spyder with 95,000 miles on it.

I've taken it to the mechanic and they say its in the dash and its gonna take for ever to diagnose.

Any words of wisdom?