Question about 2001 Chevrolet Impala
Could be a clogged fuel filter that will not let enough gas through. Or it could be a timing or vacuum issue. I would start with the easiest.
Posted on Nov 13, 2009
P0420 Difinition: Catalyst System Efficiency Below Threshold Bank one
What does that technical talk mean?
You have a worn out catalytic converter, this will not cause any sysmptom you can fell and has nothing to do with the EGR system.
Posted on Nov 15, 2009
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Posted on Jan 02, 2017
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