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How Much Does It Cost to Unclog a Catalytic Converter in 2026?

"A malfunctioning exhaust system can severely cripple your vehicle's performance, and the catalytic converter is often at the center of the issue. If your vehicle is struggling to accelerate, emitting a sulfur-like "rotten egg" smell, or displaying a flashing check engine light, you might have a clogged catalytic converter. In 2026, addressing a clogged catalytic converter ranges from a simple DIY chemical treatment costing $15 to $45 to professional chemical or thermal cleaning procedures costing $150 to $600. However, if the internal ceramic honeycomb structure of the converter has physically melted or shattered, cleaning is impossible, and..."

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