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2002 Volkswagen GTI Question: catalytic converter damaged by ignition coils?

 

Question

keving, 1.8L 4 Cylinder Turbo, Woonsocket, RI, January 27, 2011, 09:08
 Rookie

The check engine light came on this week. I took it to autozone to find out why. The codes point to engine efficiency. Means either vacuum hoses or the CC.

My mechanic thinks the cc is damaged from the 2 ignition coils that failed about 2 years ago.

Is it possible that a failed coil can damage the CC?

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  • Medium-star Best Answer
    January 27, 2011, 10:29
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     Master

    Yes, failed coils could damage the CC, since raw, unburned fuel gets into the converter.

    Zee

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    keving, January 27, 2011, 12:38
     Rookie

    Thanks for the confirmation. Is it likely that it would take 18-24 months before it showed up?

    Is there a way I can tell between a vacuum hose and a damaged CC? The price differences for repair would be big, so I am hoping I can tell if the mechanic is making the right call.

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    ZeeTech, January 27, 2011, 16:54
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     Master

    What are the exact diagnostic codes?

    Zee

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  • Answer #2

    January 28, 2011, 17:25
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     Enthusiast

    always clear the code and drive to see if it reappears before replacing cat very expensive and coil failure on vw s can cause cat damage but dont just replace it clear first

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