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Discussion Starter #1
Hi there. Any suggestions would be appreciated on this one 😬 car as above. Eml on. Computer says misfire in all 8 cylinders in fire order. 02 sensor error and catalysts overheat then entered limp mode 😢 changed plugs. Checked coils all fine. Put computer on and reset all codes and they all appeared again. Have used computer and no other errors anywhere. Now looking at getting car checked (long expensive process) every circuit every earth point. Has anyone had this problem and maybe steal me in correct direction?? Thanks in advance
 

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It's certainly possible that you have a set of failed cats if you are getting a code or display message related to overheating. This will also cause the misfires. The O2 sensors may have failed originally and could be part of the cause of the failed catalytic... but it's all speculation. A good next step is to peek into the O2 sensor ports of the Catalytic converter and inspect for a damaged cat core. Once these fail, they often clog up and trap heat.

Hope that helps!

Best Regards,
 
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