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2001 Kia Sportage how can I tell if catalytic converter is

Tiny
HEATHEN
  • MEMBER
  • 2001 KIA SPORTAGE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 185,000 MILES
Diagnostics says o2 sensor needs replacing. However the pipe between the engine and converter glows cherry red. No doubt this is the cause of the o2 sensor going bad. How can I tell if the catalytic converter is stopped up?
Tuesday, August 31st, 2010 AT 10:56 AM

1 Reply

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
There would be a VERY big reduction in performance. To test hook vacuum gague to intake manifold rev. Engine up to 2000rpms if vacuum falls towards 0 then CAT pluged up. Also over rich fuel mix can cause glow and O2 failure
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Tuesday, August 31st, 2010 AT 11:24 AM

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