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Nearside cat has been rattling for a few days now,and anoying the wife when she is driving it
What is causing it to rattle?
I am going to take it off this weekend and examine the core to see if anything is amiss.
Is there a fix to stop the rattle(unless its knacked and therefore i will bin it)
Rob
Ragussa green avant RS2+ spec
Racing blue Octavia VRS mk2 estate-Remapped now to 250 bhp
Audi coupe gt-slow as hell but loads of character-sold
insides can deteriorate on cats and bits get blown through the exhaust,I must say i have never seen or heard of it on an s2/s4/s6 before though (they are high quality),v6s are very common for it though.You could cut a flap in the cat and remove the loose bits then weld it back up as a temp measure but the same issue may happen again.There should be plenty of spare ones sat in peoples garages,new oem ones are mad money
Mine went that way, the ceramic honeycomb breaks up and no longer fits inside the body of the cat. The rattling sounds awful and will drive you mad. I managed to find some low mileage secondhand replacements...
The Perfectionist
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Audi Class Concours winner Stoner Park 2014, ADI Concours D'Elegance Class Winner 2008, Runner up 2014. Winner, S2Forum Show'n'Shine Billing 2006 & 2008.
Cheers for the answers guys,could be on its way out then.I will still take it off for a looksie.
I will put a wanted out for a pair of cats and see whats out there.
Rob
Ragussa green avant RS2+ spec
Racing blue Octavia VRS mk2 estate-Remapped now to 250 bhp
Audi coupe gt-slow as hell but loads of character-sold
Mine went that way, the ceramic honeycomb breaks up and no longer fits inside the body of the cat. The rattling sounds awful and will drive you mad. I managed to find some low mileage secondhand replacements...
yes, seen it before. took the cat off, shook it around and bits came out. its difficult to get all the loose bits out though as they lock themselves in.
sounds like broken tea-cups in there.
Cheers for the answers guys,could be on its way out then.I will still take it off for a looksie.
I will put a wanted out for a pair of cats and see whats out there.
they weigh-in for £55 each at mean scrap yards. i'd hate to ask how much new ones are from audi.
Good info, I have 1.5 cats in the garage
I had to change the downpipes on the S4 a few weeks ago, one of the pre-cats had disintegrated and was rattling like a mother ****er, sounded horrible like someone dragging a string of cans down a cobbled street. To make matters worse her indoors wouldn't even let me gut the pre-cats on the replacement pipes.... I wont ask next time
Panthero Coupé quattro 20vt
Indigo ABY coupé
Imola B6 S4 Avant
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