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2004 Chevy Impala catalytic converter

Tiny
TSMITH2809
  • MEMBER
  • 2004 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 92,000 MILES
Was wondering around what millage would the cat converter go out cause the message I get from the computer when I hook it is says cat efficence low what does this mean? Do I have to replace the whole thing?
Thursday, May 13th, 2010 AT 1:46 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Many different things can dictate the life of a cat converter. If there have been engine problems such as a blown head gasket, the coolant contamination can shorten the life, as well as oil contamination. If you are getting a "cat efficiency low" code, I would take it to the dealer and see what th ewarranty is for emissions. Its ony 6 years old and under 100k miles you may be able to get itwarrantied. Otherwise you will need to replace the entire cat converter.
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Friday, May 14th, 2010 AT 8:07 AM

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