Quote:
Originally Posted by jb92563
My old cat has lost the cement seal between the cat element and the shell allowing gasses by. You can hear it slide back and forth inside once its removed from the car.
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Out of curiosity, what did this sound like when running the engine before you fixed it?
I have a metallic rattle noise that only happens in certain RPMs when the engine is warmed up, coming from one side of the engine (passenger side), it sounds like up near the engine somewhere. It sounds just like a rattling heat shield but I've checked the obvious heat shields and for exhaust component contacts with frame, etc, and so far can't locate the source of the rattling noise.
I have no check engine light problem nor performance problems (at least that I've been able to notice - car has been like this for about a bit over the year since I've bought it, and it's my first boxster.) 2001 base 2.7. Thanks!
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