OBD Code Po421
Changed the catalytic converter recently.
Engine would hardly go over 15 mph.
Repaired broken valve #2 cylinder.
New valve job.
New rebuilt transmission.
Suspect Vacuum leak or oxygen sensor
Changed the catalytic converter recently.
Engine would hardly go over 15 mph.
Repaired broken valve #2 cylinder.
New valve job.
New rebuilt transmission.
Suspect Vacuum leak or oxygen sensor
Jul 13, 2008 at 4:09 PM