Catalytic converter failure 4.6is

[jontezan]

Originally Posted by blabla30

I have also a rattle on the driver side and a cat unefficency failure on my 4,8is.



But the cat works, I had some emmission test here in germany and the result was ok



So I will replace the after cat lambda sensor and I hope there is some loosen heatshield..

My car also passed emission test. The rattle was most present on idle, and when giving wery light gas. It feels wery good to have it rattle free again. Good luck with your rattle, hope its just a heatshield come loose


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