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Posts Tagged: catalytic converter

Catalytic Converter — What is it?

Catalytic Converter — What is it? First off, it’s a CATALYTIC converter, not a Cadillac converter. A catalytic converter is designed to convert pollutants from your engine into less harmless carbon dioxide and water through a catalytic reaction. A catalytic converter is part of the exhaust/emissions system A catalytic converter is part of the exhaust system. It’s usually mounted right after the exhaust manifold. The catalytic converter contains a ceramic honeycomb that’s coated you’ll find a ceramic honeycomb coated with a microscopic layer of precious metals like Platinum, Palladium, Rhodium, … Read More

How a catalytic converter works to reduce pollution

What is a catalytic converter and how does it work? A catalytic converter is a metal container that houses a honeycomb ceramic structure that’s coated with certain precious metals like platinum, palladium or rhodium. The converter’s job is to transform harmful exhaust into Carbon Dioxide (CO2), Water (H20) and Nitrogen (N2). There are two types of catalytic converters: • Two-way catalytic converter— The precious metals store excess oxygen from the exhaust and use it to convert carbon monoxide (C0) into carbon dioxide by adding one oxygen atom. The metals also … Read More

Overheated catalytic converter

How a catalytic converter works

How a catalytic converter works, what it does A catalytic converter converts the various exhaust compounds of hardrocarbons (HC), Oxygen (O2), and Oxides of Nitrogen (N2) into more environmentally friendly gases. If a perfect world, all engines would burn the perfect combination of air and fuel in this ratio: 14.7:1 (air to fuel). After combustion, you would wind up with CO2, H2O and N2. Unfortunately, that never happens in the real world. How your car actually computes the air fuel mixture You’re constantly adjusting the gas pedal and the car … Read More

P2098

Fix code P2098 trouble code on Dodge Stratus, Sebring Trouble code P2098 on a Dodge Sebring or Dodge Stratus indicates that the downstream (post catalytic converter) is reporting a reading that’s consistently above or below center for a predetermined amount of time. Most DIYers replace the oxygen sensor and wonder why they still get the same code. In effect they’re treating the messenger and not the message. An exhaust system has two oxygen sensors. The first sensor tests how well the computer did in calculating air/fuel mixture. The second sensor … Read More

Fix code P0430

Code P0430 Catalyst System Efficiency Below Threshold (Bank 2) NOTE: Codes P0420 and code P0430 are similar. I wrote a much more detailed explanation of how an emission system works and what causes these codes. Read this post and then refer to this more detailed post. Code P0430 means the catalytic converter for bank 2 has failed it’s testing. The oxygen sensor in front of the catalytic converter switches back and forth between rich and lean as the computer constantly changes air fuel mixture. If the catalytic converter is doing … Read More


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