what would cause a repeated front catalytic converter failure on a 2002 mazda...

  • Thread starter Thread starter Mark T
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Mark T

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...tribute with 3.0 twc system? besides fuel pressure ok @70 lbs,compression good, spark plugs new& correct, 2 coils changed due to a misfire condition,o2 sensors replaced (all 4)main cat had been replaced, front cat and exhaust system blown out with compressed air. car was running fine, returned to customer and then 2 weeks later new front cat melted and destroyed. Now, power loss
 
catalytic converter should last 15 or so years ... could be theres a flow problem behind it blocking flow
 
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