Cadillac Owners Forum banner
  • Hey everyone! Enter your ride HERE to be a part of MAY's Ride of the Month Challenge!

o2 sensors

  1. Seville and Eldorado Forum
    95 etc 126,000 miles. Trans was overfilled by about 2 gallons and drove from Chicago to Philadelphia (about 900 mileds). Car burned and smoked oil until I eventually pulled out excess trans fluid. Prior to trip car was getting a 400 mile range on the tank and 24-28 hwy MPG. Is it possible that...
  2. 2008-2013 CTS General Discussion
    Car had been throwing p0050 code at me for a while. Changed o2 sensor with cheap online model. It took away my check engine light, and everything was fine for 2 months. Noticed a rough idle and check engine light on again this week. Checked codes and i'm getting the p0050 again, plus a p0155 and...