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A4 catalytic convertor

Tiny
ROGERB363
  • MEMBER
  • 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?
Saturday, January 8th, 2011 AT 1:53 AM

4 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 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
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  • 3 POSTS
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
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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
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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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