Question: catalytic converter
I had rattling and they diagnosed it as the catalytic converter and the exhaust pipe. The rattling occured mainly when I was stopped and my foot was on the brake then the vibrating would start. Once the car was in motion I would not hear it. It was repaired and the sound is gone but I'm wondering if they really needed to replace the converter. They said it sounded to them like it had stones in it which indicated there were some stuff that had broken off. Does this sound correct?
Elizabeth K
Expert Mechanic
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