2002 Porsche Boxster Repair Question
Catalytic converters and oxygen sensors won't cause a misfire in your situation.What cyls are misfiring and how did you determine random misfire?
60 answers provided
Cylinders 2, 4, and 6 by OBDII readings. I replaced my O2 Sensors first, which I wish I had not done. Then I replaced my catalytic convertor because the filter material had melted from the misfires. However; after much research on AllData and other Tech bulletins, I figured out that the one thing, which causes these symptoms in the Porsche Boxters and other models is the Air-Oil Separator. I changed it at about $106 from AutopartsWerehouse and put it in myself. It took me about 15 minutes. Problem solved. Thanks... Now I'm struggling with the Jaguar X Type Transmission Problem, for which the dealer told me I would need a new transmission. All it takes is resetting the J - Gate. It's a huge differenc ebetween my own free labor and about $10,000 for the Jaguar dealer for a new transmission. As an engineer, I just don't think that's ethical on their part. :)
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