C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

MUFFLER BUZZING NOISE?

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Old 10-05-2009, 10:22 PM
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2005 C230K
Exclamation MUFFLER BUZZING NOISE?

Hi,

Lately ive been nailing my car like crazy, red lining it in tiptronics, reaching high speeds that i haven't reached before (100+) MPH, drifting and havent been taking care and babying it like i should be. Today i realized that when i reach 1,000 RPMS that i hear a slight buzzing noise coming from the muffler that isent that noticeable but can be annoying when you know its there. The buzzing noise goes away when you exceed 1,000 RPMS.

- Checked that the muffler tip is tight and secure
- The muffler system going under the car from the muffler tip and everything seems pretty loose to me (can move it around a little bit) would this be normal?

Will this buzzing noise go away within time?
Any ideas why this is being caused?

Thanks!
Old 10-06-2009, 07:41 AM
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late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Likely a loose baffle in the muffler or a piece of Cat honeycomb has broken off & is rattling around.

The exhaust should be loose on it's hangers.

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