: 06 sts

08-02-09, 04:46 PM
hey i got a 06 sts and when i accelerate there is a loud pinging noise that comes from the exhaust. it kind of sounds like sheet metal dragging.

is it the heat shield vibrating or is it something else

08-03-09, 05:40 AM
Hard to tell exactly (without hearing it) however it could be a broken catalytic converter (the innards rattling around inside the cans).

09-17-09, 08:02 AM
That's how mine sounds on initial warmup and acceleration. Should I have it looked at again? I just had the right converter replaced. I hate the rattling sound.