Catalytic converter keeps failing

2012 PEUGEOT 208
52,500 MILES • 1.2L • 3 CYL • 2WD • MANUAL
Avatar
CRAIGYBOI
  • MEMBER
  • 3 POSTS
Car has had two catalytic converters put on it and both have failed and cracked within a month of been replaced. not sure what's causing this, but need help.
Mar 5, 2020 at 5:51 PM
Advertisement
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning.

It sounds like they are overheating from running too rich with fuel. Unburned fuel in the exhaust will cause them to heat up and get damaged.

Is there a running issue with your car?

Roy
Mar 5, 2020 at 9:36 PM
Avatar
CRAIGYBOI
  • MEMBER
  • 3 POSTS
Hi, thanks for the reply. the car was running fine before the first catalytic converter failed and ran fine after replacing it until the second one failed.
Mar 5, 2020 at 10:20 PM
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Okay, does it run bad at this time?

What brand converter was used for the replacement?

Roy
Mar 5, 2020 at 10:23 PM
Avatar
CRAIGYBOI
  • MEMBER
  • 3 POSTS
Hi, yes it does now as catalytic converter has a hole in it. not sure what the make of the catalytic converter was, but it was off another Peugeot 208 and it was the same year.
Mar 6, 2020 at 12:21 AM
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Okay, so it was used. Never a good idea.

You need to replace with new only.

Roy
Mar 6, 2020 at 12:33 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.