Q&A

 Rookie

recently i replaced my front and back oxygen sensors as well as my egr valve after my car failed an emissions test and gave those codes i retested and i still failed with the egr and rear oxygen sensor still sending a code the only new code is po100 which says mass or volume air flow A circuit the only other repair recently made was i replaced the egr tube because the old one had been cut by a previous shop and when they put a hose over the open space it burned up and i was not able to find anything to breach that gap so i finally found a car that someone was scrapingand pulled that part.