knock noise

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knock noise

12-25-2007, 02:32 PM

catalina30 catalina30 is offline

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Join Date: Sep 2006

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knock noise

My 2002 E320 4matic wagon just started making a knocking noise. It has 34,000 miles and the noise sounds like it comes from the catalytic concverter area. You hear it at idle and seems to disappear when accelerating. I guess I will have to put it up on my ramps and start it up. Can anyone please offer some suggestions? Thanks in advance, John

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