Signs of a BAD O2 Sensor?? Symptoms??
okay guys, i'm curious as to what are signs of a bad O2 sensor? running lean/rich? bogging? what are ways to check for signs of a bad O2 visually and electrically?
i'm asking because i'm running super lean when the O2 is plugged in and of course super rich when i unplug them due to the CEL/limp mode. i have 2 O2's one in the cat and one right after the turbo and both do the same thing. i just bought a Bosch universal O2 today for $80 along with 36 new spark plugs(like to have a little stock pile) and just want to make sure it could be my O2's before actually installing the new O2.