FIVE CHECKS BEFORE REPLACING A CATALYTIC CONVERTER
Converters don’t fail on their own, complete these five checks before replacing a catalytic converter:
1.Retrieve / repair all PCM trouble codes, check for any available TSBs or PCM re-flash updates
2.Repair all exhaust leaks
3.Make sure vehicle is in proper fuel control
4.Always check for internal coolant leaks and excessive oil consumption
5.Make sure you have the right part for the application