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2003 Volkswagen Golf Exhaust emissions failure

Tiny
ROBINMANNERING
  • MEMBER
  • 2003 VOLKSWAGEN GOLF
  • 2WD
  • MANUAL
  • 80,000 MILES
CO2 resting : 00.80%, CO2 accelerating : 01.08%, Lambda : 0.98

Above are the readings from the last MOT at the testing station. It has failed based upon these readings.

Can you tell me if the above points to a problem with the catalytic ocnverter and if I should replace it?

Many thanks for your help.
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Monday, November 3rd, 2014 AT 1:50 AM

2 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Yes, these numbers indicate a bad cat, please replace and recheck.
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Monday, November 3rd, 2014 AT 2:08 AM
Tiny
ROBINMANNERING
  • MEMBER
  • 2 POSTS
It's in the garage now, so will let you know the outcome of replacing the cat.
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Wednesday, November 5th, 2014 AT 3:50 AM

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