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2002 Renault Scenic Repair Question


Topics covered: Catalytic converter, Clunking, Rotten egg.
Mileage: 74,000 miles.

Asked on June 9, 2012

Car is making clunking sound and smells like rotten eggs

Car was running well,no warning lights nothing.Went to drive it on friday,there was ajuddering,a clunking sound and a smell like rotten eggs.help
Avatar Asked by morven shortt

Answer

Replied on June 9, 2012

That sounds like the catalytic converter has rotted internally and collapsed in on itself. It needs to be replaced. Try tapping it with hand or rubber mallet to listen for loose material to check it for sure.

Tiny Answered by DrCranknWrench (expert)
3,292 answers provided