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Old 06-13-2011, 05:22 PM   #1
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Default Catalytic converter

would a code be thrown for a obd II b16a2 bad cat...or could i have a bad cat, with no code be throw...having acceleration pro's..just checking....maybe its clogged but would i throw a code? there are no codes presently, thx
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Old 06-13-2011, 06:04 PM   #2
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Default Re: Catalytic converter

mine tossed a code...60 I believe.
ran perfectly, got great mpg...no noise...nada.
Threw a code and couldnt get rid of it except changing it...
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Old 06-13-2011, 06:07 PM   #3
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Default Re: Catalytic converter

take the cat off if ur acceleration goes away clogged cat if it still there it another problem
1995 Civic DX, 1998 Civic Hatch DX, 1994 Del Sol
1994 Civic Coupe DX , 1992 Civic Hatch CX
2001 CRV, 2000 s2000
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Old 06-14-2011, 09:47 PM   #4
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Default Re: Catalytic converter

There's a mod involving two spark plug defoulers you can do to trick the ECU into getting an acceptable reading from the secondary sensor. Take first defouler, drill through it. screw the 02 sensor into that, then screw those into the 2nd defouler, and that into the exhaust.
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Old 06-15-2011, 07:37 AM   #5
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Default Re: Catalytic converter

actually here is a link. need to do this to mine so I have it bookmarked. everything is running fine so I just want to shut the light off. don't want to miss any other codes that might show up.

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Old 06-15-2011, 07:43 AM   #6
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Default Re: Catalytic converter

A bad cat will almost always throw code P0420.
Don't guess, troubleshoot

Technical links:
FAQs sticky...CEL Codes...Spark diagnosis...
Testing Fuses...Fuse 15 TSB...Cleaning the IACV or FITV

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