1998 3.8l v6Ok i have a miss in one cylendar and this is what ive donecompression test- good all aroundreplaced all injectorsreplaced coil and wiresfull tune upegr valveo2 sensorscleaned mass airflow sensorit only misses from 750-1500 rmpcode comes up with a lean mixture bank 2what could be the other causes
code- lean mixture bank 2is a lean code from the secondary O2 sensor on drivers sideprobably a bad catalitic converter, you can check that by running a pair of MIL eliminators and see if the code reappears, or adding a gas additive to remove any water in the tankcause that is a pain in the butt code to chase down in the cartrust me I've got a 2008 that kept throwing it on cold mornings, until I found out the reason was the cold air kit i was using, it would shrink up enough from the cold to allow extra air to leak around the throttle body, so I got rid of the KN plastic tube set up and went with the BBK aluminum tube design.
