Re: Symptoms of a failing/failed catalytic converter?
Eh, the catalitic converters are monitored via downstream O2 sensors, I would not worry about it.
The exhaust pipe to manifold joint be-LOWS, even with tight hardware on the manifold and collector it can give a bit of a sputtery, ticky, exhaust leakie sound.
Mostly a problem on the 4.7l but chrysler has had issues with exhaust hardware (specifically the back to bolt/studs on each manifold). I believe the 10' 1500 hemi Rams there was a recall that involved removing and replacing the back 2 bolts on each head with stronger stainless bolts because of broken bolts.