Date registered: May 2006
Mentioned: 0 Post(s)
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1990 300SE failed emissions test
Inspection time is here again. Last year, the inspection station failed my 300SE on the emissions test. I tried driving it out before returning for a retest and it failed again. How did another station pass it? Don't ask. How can I avoid going through this again this year. What are the possible causes? Can an oxy sensor cause an emissions failure? I can't even think about buying a cat for this thing. What are the other possible problems?