So the car has developed a new rattle. Not that it had a lot to begin with.

When ever I deselerate a metalic sound comes from the right underside of the car. It may be coming from the exaust, but I cant tell where. It is also more pronounced when the car is cold.

You guys think somthing dislodged in my exaust and is shaking around in there? I still have the cat in, but it was replaced a year and a half ago, so it shouldnt be coming apart just yet. Any ideas?

 

is it ONLY when you decel or USUALLY ?

 

Does it happen when you downshift and decel? If so, I have experienced this a couple times.

 

when I down shift AND decel, with the clutch in or out. Some times it gets REALLY loud. And I've noticed loud back fires when shutting off the car.

If I have time today, I'll pull the cat to take a look/

 

It's the aluminum heat shield....

 

Yea i would prolly say it's the heat shield, but if it's not that check your lug nuts, I had a vibration when the clutch was in or decelerating, and my rear lugs were loose!

 

I'm having the same problem right now.. took it to the shop that did my exhaust, and the are saying the the header.... I got the header from parts source... And there jackass about replacing it