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Rattle in exhaust


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Hi,

I've done a search on the forum but cannot find an answer so here goes...

I've got a rattle in the exhaust which only happens at around 1800 rpm.

I think the baffle is loose inside the right hand side chamber.

Is is possible to just remove this baffle ?

Any help would be appreciated.

:renntech:

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Hi,

I've done a search on the forum but cannot find an answer so here goes...

I've got a rattle in the exhaust which only happens at around 1800 rpm.

I think the baffle is loose inside the right hand side chamber.

Is is possible to just remove this baffle ?

Any help would be appreciated.

:renntech:

The interior baffling of the muffler is pretty stout, so before you start removing the muffler, I would first let the car fully cool down and then get under it to grab all the muffler connections and try to move them. It may be something as simple as loose bolts on the clamp connections or loose heat shields causing your rattle problem. I once had an annoying rattle at idle in my exhaust. I thought the noise was coming from inside the muffler, but it turned out to be a loose clamp at the connection where the u-pipe connects the muffler to the cat converter. Other areas that typically come loose are the heat shields on the cat converters themselves or above the muffler exhaust area.

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Thanks for input guys.

I checked the heatshields and they are fine.

When a bang the right hand side of the exhaust box I can hear the rattle inside.

If it's truly the baffle that's come loose, there's no way to remove just the baffle unless you cut open the muffler, which means you'll then need to re-weld the muffler back together afterwards. Probably easier to just source another muffler and install.

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  • 3 weeks later...

What was the end result? I have a similar problem with my 996- except my rattle is on the left side. Car is an '01 with 49k miles- I am very surprised that the baffles would be shot with this relatively low mileage.

Edited by DCNSX
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  • 2 weeks later...

I have a rattle in my exhaust as well and it has steadily gotten worse over the past month or so. I was due for a checkup and oil change anyway today so I had them look into the rattle. They called me back later and I found out that the catalytic converters on my car were partially plugged and the inner honeycomb was broken up on both sides. You may want to look into this as a possible cause as the mechanic said this is not a real common problem but he has seen them before.

Replacements are a killer up here in Canada where each side is $1600.00 CDN but he is looking for a couple good used ones for half price.

Cheers

Don

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