2003 Hyundai Santa Fe 4 cyl Two Wheel Drive Automatic 72000 miles
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
have the same problem?
Sunday, July 13th, 2008 AT 4:09 PM