Rochev96
New Member
- Joined
- May 2, 2020
- Messages
- 3
- Reaction score
- 0
- City, State
- Maine
- Year, Model & Trim Level
- 1996 5.0 AWD
I bought my father in law's 2002 V6 he bought new. It has been driven with the OD/OFF light flashing and engine light on for "years". It's misfiring badly and can't usually get out of its own way. The transmission shifts into OD just fine and stays locked in at around the 45mph acceleration test. My main concern right now is the engine codes for every o2 sensor. Those are the only important codes I got. I attached a photo from FORScan showing the o2 sensor results. I'm a bit confused on exactly what this means as the results are odd. It says the voltages are normal and the only misfire detected is a slight non catalyst damaging one... Should I go ahead and replace the upstream o2's? And would that alone be causing the severe misfiring? I'm hoping the cats aren't toast.