exhuast

or atleast I think its the exhuast, it makes a rattle. sounds like metal is scaping against each other or something. i let the car run while i look for the sound and it sounded close to the tail pipe and muffler. does anyone know what it is and how to fix it?

Sounds like the muffler has a loose baffle. Happens all the time. No need to fix it unless it bothers you.

I second that. If it's coming from closer to the cat, it could also possibly be a chunk broken loose inside of your cat. But like curtis said, it's most likely a loose baffle.

Check the baffles!

im not to bright when it comes to exhunast, define baffles, im gonna need some major explaining on this.

Crawl underneath your car and pound on the muffler and catalytic converter with your hand. If it rattles when you hit it, you found your problem.