54bobby Posted February 16, 2015 Posted February 16, 2015 will an exhaust leak just before the cat produce an elevated o2 reading from the tail pipe? my 2.5 failed emissions on o2 but is tuned up and running well.
HOrnbrod Posted February 16, 2015 Posted February 16, 2015 Yes, it could. Were the CO and HC readings normal? If so, the exhaust leak is the likely culprit.
54bobby Posted February 17, 2015 Author Posted February 17, 2015 Yes, it could. Were the CO and HC readings normal? If so, the exhaust leak is the likely culprit. yes only the o2 was high. all other levels passed.
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