What are the symptoms of a faulty catalytic converter?
1 Answers
The symptoms of a faulty catalytic converter mainly include three points. Below is a detailed introduction to the symptoms of catalytic converter failure: 1. Decreased engine power performance: During driving, the catalytic converter is prone to being affected by road conditions, causing bottoming or strong vibrations. This can lead to collisions of the catalytic converter, resulting in the fragmentation of the catalytic converter carrier, which can easily block the exhaust passage, causing decreased power performance, increased fuel consumption, and worsened emissions. 2. Increased exhaust passage resistance: Due to faults in the fuel supply system, ignition system, etc., engine overheating or backfire can cause sintering and peeling of the catalytic converter carrier, increasing exhaust resistance, which also leads to increased exhaust passage resistance. 3. Disordered engine air-fuel mixture concentration: When the catalytic converter is damaged, the secondary oxygen sensor cannot correctly provide data to the vehicle's computer ECU, causing the engine air-fuel mixture concentration to become too lean or too rich. A too lean mixture can cause ignition difficulties, weak driving, engine backfire, etc. A too rich mixture can increase fuel consumption, incomplete combustion, and severe carbon deposits in the cylinders and spark plugs.
