Might be my first problum, Exhausted - Mercedes Benz SLK Forum

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#1 Old 11-05-2013
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Red face Might be my first problum, Exhausted

HI all I have a 3.2 r170 2002 with only 37,000 miles on her.
Just developed a rattle and it sounds as it’s my exhaust it original and in very good condition. But I think that one of the middle cats has become loss inside the case as it is rattling just at that point and it’s relevant to the accelerator. My question is there a valve in there or just the cat. Or is there a known fault. Any suggestions welcome.
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#2 Old 11-05-2013
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I have the same exhaust rattle on my 320. I had a look at the rear box and heat shield but they both seem secure. I will get round to jacking the car up and looking nearer the engine. The insides of the cats are known to break away and rattle but I've also heard that heat shields can break loose from their mountings and rattle. Will let you know if I find anything.
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