Question about 2001 Chevrolet Blazer
Hello: You have spent a lot of time and money already. I would recommend you use a back pressure gage and check for a restricted exhaust system (possibly a plugged catalytic converter) Anything above 1 psi indicates a restricted exhaust. It screws in where the 02 sensor goes in front of the catalytic converter.
Posted on Nov 15, 2010
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Posted on Jan 02, 2017
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