before you crawl under there with a sawsall check your heat shield . thats wht was rattle on mine.

 

im pretty sure that its my cat...but where is the heat shield located?

 

the one on your cc. If there is not one there someone could have cut it off which is not a good thing if you park it in high grass after it has been running for a while. believe me from experince. These things get extremely hot.

 

ill check it out thanks