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got a new engine, i also need a new cat.

Old 09-26-2009, 07:58 PM
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got a new engine, i also need a new cat.

i just got a new engine... ive been getting the p0420 error code from my check engine light which basically means i need a new catalytic converter. Ive had the light on for about 3000 miles...Being thats its a new motor, Its been like that for about 2500 miles on this new motor. Can a clogged cat kill my engine within 3000 miles?? Im about to order a midpipe but im just wondering how much 2500 miles with a clogged cat affected my engine??

Last edited by freaklinkmusic; 09-26-2009 at 09:49 PM.
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Old 09-26-2009, 08:57 PM
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In the US the cats have 80K mile warranty..
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Old 09-26-2009, 09:48 PM
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Originally Posted by Old Rotor View Post
In the US the cats have 80K mile warranty..
the warranty for my entire car in VOIDED. Do you think I can still get a free cat replacement? I have 68,000 miles on the chassis of my car
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Old 09-27-2009, 05:48 AM
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Remember to Pre-Mix..it is your best friend..
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Old 09-27-2009, 11:00 AM
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Originally Posted by freaklinkmusic View Post
the warranty for my entire car in VOIDED. Do you think I can still get a free cat replacement? I have 68,000 miles on the chassis of my car
What do you mean your warranty is void?

Anyway, yes you should still be able to get a new cat.. it is a federally backed emissions warranty, not Mazda's. I was able to get a new cat for free at 82k miles.. presumably because the dealer wanted the money and fudged the numbers.
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Old 05-21-2014, 08:57 AM
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New engine and bad cats? I can relate -

Suggestions? Anyone else get P0420 after an engine swap?

Last edited by fixitall; 06-03-2014 at 01:49 PM.
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