- Oct 29, 2010
That was my first thought as well. I had a convertor come apart internally and sounded just like that. I could even hear it rattle without the engine running, just by slamming the door.
So slamming the door didn't help but I tapped the cats with a rubber mallet and I'm fairly certain it's the drivers side cat. You can hear similar rattling. I'm going to inspect the flexplate one more time tomorrow to rule that out for sure.