Quote:
Originally Posted by dougpaper
Said the cats were not flowing freely and the 02's had residue. I did admit i ran fuel injector cleaner frequently and that is a no no i guess. I run only 93 gas thru it.
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Early failure of catalytic converters is usually a symptom of a problem. Especially when combined with oxygen sensor residue. Why did you feel you needed to add injector cleaner? I would be surprised if that alone would cause damage to the converters unless you was using it very frequently and large amounts.