Can Driving in Traffic Jams and Urban Areas Lead to Catalytic Converter Issues?

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Can Driving in Traffic Jams and Urban Areas Lead to Catalytic Converter Issues?

Given the stop-and-go nature of traffic in cities like Karachi, Lahore, and Islamabad, does excessive idling and low-speed driving contribute to carbon buildup inside the catalytic converter?

Lubaba asked on 22 Feb 2025 11:31:29 am

1 Answer

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Car Mechanic Expert - on 22 Feb 2025 11:37:33 am

Yes, excessive idling and low-speed driving contribute to catalytic converter issues:

Carbon Buildup: In stop-and-go traffic, the engine operates at lower RPMs, which can lead to incomplete combustion. This causes carbon buildup in the exhaust system, including the catalytic converter.
Heat Dissipation: The catalytic converter works most effectively at higher temperatures. Prolonged idling o r low-speed driving prevents it from reaching the optimal temperature for efficient operation.

To prevent this, try to avoid excessive idling and opt for longer, more consistent driving when possible.