What are the impacts of a car without a catalytic converter?

[LaRosalie]

The effects of a faulty catalytic converter on a car are as follows: 1. Increased exhaust pollution: Without the catalytic converter to reduce harmful gases in the exhaust emissions, the vehicle's exhaust pollution will worsen. 2. Engine warning light on: When the engine's electronic control unit (ECU) cannot detect or detects abnormal signals from the oxygen sensor, the engine warning light will illuminate. 3. Increased fuel consumption and reduced power: A damaged catalytic converter will affect the normal signal of the oxygen sensor, causing the engine to inaccurately control the fuel injection quantity, leading to increased fuel consumption and reduced power. 4. Carbon buildup: As the air-fuel ratio of the combustible mixture in the cylinder becomes severely imbalanced, incomplete combustion will produce a large amount of carbon deposits accumulating in the cylinder, thereby increasing the 'chronic diseases' of the engine.