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Registered
Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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Running so rich, I would be surprised if the cat wasn't totally burned out by now.
Joe |
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08-13-2004, 07:38 PM
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Registered
Join Date: Oct 2003
Location: London Ont Canada
Posts: 3,120
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The cat is still working fine. Notice the HC and NOx are still well within limits even though the CO was high. The front section of a 3 way cat works by stripping the oxygen from the NOx and then adds it to the HC and CO in the rear section to produce more CO2 and some H2O. A normal reading from either of the 2 gases from one section and normal NOx from the other shows a Cat working as expected .If it has failed you usually see all 3 gases as high.If the matrix has become clogged (from a partial meltdown)you would not have seen the pass after restoring the mixtures with a new O2 sensor either.
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1980 911 SC 3.6 coupe sold 1995 993 coupe 1966 Mustang Shelby clone 1964 Corvair Spyder Turbo gone 2012 Boss 302 |
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08-14-2004, 07:43 AM
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Registered
Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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Good point!
Joe |
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08-14-2004, 08:51 AM
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