Question about Toyota Corolla
Posted by Anonymous on
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Posted on Jan 02, 2017
nox is from running lean..... its realy high temps that cause this.......... replace the o2 sensors this should cure that any more help let me know
Posted on Oct 24, 2008
SOURCE: Failed smog
We had to have the calatic converter replaced. We did this after doing an oil change, air filter change, and new spark plugs and still hadn't passed smog. After changing the calatic converter it passed smog with scores of 25.
Posted on May 15, 2009
get oxygen sensor checked,maybe get tune up see if engine is leaning off properly,could be air flow sensor,but needs sensors to be checked
Posted on Oct 30, 2009
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