Anyone know if catilac converter cleaners work?

Hi I have a po421 code and can I afford to replace my Cadillac converter? Anybody know if the Cadillac Cleaners work?

4 Answers

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  • Pearl
    Lv 7
    6 months ago

    i would try it and see and then you'll know

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  • 6 months ago

    Contact a local junk yard and see if you can buy a used one.

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  • Rick
    Lv 4
    6 months ago

    Never heard a positive OR negative comment before, so let me know how it works; sure would be cheaper then a new one. BUT, did you check your O2 sensors ?? THEY report on the cats performance to the cars computer ..................

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  • 6 months ago

    i would talk to a mechanic and see what they say

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