A4 CATALYTIC CONVERTOR

  • Tiny
  • rogerb363
  • 2004 Audi A4
  • 4 CYL
  • 2WD
  • automatic
  • 43,000 miles

There is a metal clanging noise periodically from the engine. I'm being told it is the casing for the catalytic convertor, so it is not a warranty item. Does it make sense to replace this casing?

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Saturday, January 8th, 2011 AT 1:53 AM

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  • Tiny
  • mhpautos
  • Expert
  • 30,561 posts

If the cat has collapsed, it must be replaced as a unit, you can't just do the housing.

Mark (mhpautos)

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Saturday, January 8th, 2011 AT 2:28 AM
  • Tiny
  • rogerb363
  • Member

Thanks Mark, but I may not have described this correctly - I should have said that I'm being told to replace the "shield". I assume they mean heat shield.
Does that make sense?

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Saturday, January 8th, 2011 AT 2:36 AM
  • Tiny
  • mhpautos
  • Expert
  • 30,561 posts

If there is a cracked or broken heat shield, this can be replaced, just make suer that it attach bolts just have not come loose.

Mark (mhpautos)

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Saturday, January 8th, 2011 AT 3:44 AM
  • Tiny
  • rogerb363
  • Member

Mark - thanks a lot! This is a big help!

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Saturday, January 8th, 2011 AT 12:08 PM

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