Quote:
Originally Posted by zerodameaon
Change your cat!! I had this exact issue almost the same numbers and i changed my cat to a Magnaflow 36306 i believe and i passed. Just barely but it passed. These idle tests are sadly harder to pass then the enhanced tests. My car would pass pretest enhanced but fail the regular test.
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Now that I saw his o2 @ idle High O2 at Idle is Maybe a Vacuum leak causing a lean missfire Is Idle higher than normal RPMs?,If no Vacuum leak . I'd have to agree with this quote. Change the cat like the he advised.