Rattle noise coming from cats

[OBR1EN]

There seems to be a rattling noise on idle coming from the cats on my car. The vibration creates a fairly loud rattling noise wat could this be?

[Farlig]

most likely ceramic is fubar in the cat then.

[TheA55hole]

Yeah exactly as Farlig said, The cat's are dead...

[Not_An_Abba_Fan]

Check the bracket that goes from the exhaust to the cross member, if this is loose it will sound like a cat. Otherwise it is as was already mentioned.