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What parts make up the "catalyst system"?

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Old 01-31-2005, 01:13 PM
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Default What parts make up the "catalyst system"?

Besides the obvious "catalytic converter", and I'm told "PCV Valve" as well (???)... anything else?

Car is a 00 Si...
Old 01-31-2005, 01:19 PM
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Default Re: What parts make up the "catalyst system"? (JoshuaVTEC)

I don't know for sure, but I think it would include the air box, intake arm, intake manifold, exhaust manifold, the cat, and all the sensors hooked up to it.
Old 01-31-2005, 01:41 PM
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the EVAP canister and the vacuum system also
Old 02-01-2005, 10:36 AM
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Default Re: What parts make up the "catalyst system"? (JoshuaVTEC)

So a "catalyst system" CEL could be any of these? Anything else?
Old 02-01-2005, 11:26 AM
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Default Re: What parts make up the "catalyst system"? (JoshuaVTEC)

try changing your catalytic converter. I had a code 67 a malfunctioning catalyst system. I changed the cat and the check engine light went off. I got a magnaflow high flow cat for 100 installed. they even made a bung for my 02 sensor.try it.Good luck.
Old 02-01-2005, 12:55 PM
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that code can also mean a misfire, first i would go on the highway or run it hard to try and clean it out and if it doesnt go away give it a tune up if it needs it. if you gave it one recently then change the cat out
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