Recent content by Peterk75

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    PO421/PO660 mazda protege LX 2002

    Thank you. I had seen this trick before, but was hoping not to have to use it and be able to actually fix the problem. In the end, I did the non fouled trick. My CEL is now off. So I guess I'm good for now. Thanks again.
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    PO421/PO660 mazda protege LX 2002

    I have a 2002 Mazda Protege LA with about 240,000 + miles. Been a great car and would like to keep it around 1 more year until my other car is paid off. For the better part of a year I have had the CEL come on several times and each time it throws the same 2 codes. The first code is the PO421...
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