Drive cycle

Asked by Soccerdad55 Oct 02, 2016 at 01:53 AM about the 2003 Chevrolet Impala LS FWD

Question type: Maintenance & Repair

I reset the ODB2 after a repair, now after 20p miles
driven in varying conditions it syill shows the
catalyst and ERG monitors still showing  "not
ready".  What do I need to do to help this?

3 Answers
1,975

Jay answered 7 years ago

sometimes it can take a good amount of driving to get them to read ready. common problem with those impalas from what i know is the EGR passage way becomes clogged with carbon build up on the intake manifold and EGR connection point. what repair did you recently have done to it?

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GuruDMM66 answered 6 years ago

If oil sensor light comes off and on will it pass inspection

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