What are the symptoms of a slightly clogged catalytic converter?

[PaulDella]

Symptoms of a slightly clogged catalytic converter include: reduced vehicle acceleration, difficulty in increasing engine RPM and vehicle speed. After the catalytic converter is clogged, poor exhaust flow leads to reduced air intake and decreased engine power. Vehicles with automatic transmissions experience frequent forced downshifts. There may be slight backfiring when the engine is suddenly accelerated. During sudden acceleration or deceleration, a 'rattling' sound can be heard from the exhaust system. Below is an extended introduction: Introduction to the catalytic converter: The catalytic converter is an important external purification device installed in the vehicle's exhaust system. It converts harmful gases such as CO, HC, and NOx emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. It features stable performance, reliable quality, and a long service life.