Once the noise is reproduced, ensure that there is no contact between the exhaust pipe and the body, check the alignment, integrity and condition of all exhaust system components, and try to eliminate the noise by manually securing various pipe components or thermal insulation shields.
If the noise is localized in the catalytic converter, you need to remove it and conduct a visual inspection inside the housing, and also shake the converter vigorously to identify the destruction of the filler or the presence of a foreign object inside.
If the filler is destroyed, its cause should be identified and checked to see if the pipeline downstream of the neutralizer is damaged by filler particles.
Pic. 3.80.Elements of the exhaust gas system: 1 - exhaust manifold gasket; 2 - exhaust manifold; 3 - turbocharger; 4 - boost pressure control valve; 5 - intake exhaust pipe; 6 - exhaust pipe of reduction; 7 - catalytic converter; 8 - front muffler; 9 - rear muffler; 10 - spring brackets; 11 - thermal protection screens