What are the causes of the GS5 emission system malfunction?
2 Answers
GS5 emission system malfunctions can be caused by: exhaust system failure and fuel quality issues. The specific reasons are as follows: Exhaust system failure: The emission system warning light in the engine comes on mainly due to excessive carbon buildup in the throttle or inside the engine, which disrupts the air-fuel mixture ratio. When the engine computer detects signals that affect emission requirements, the warning light will illuminate. Vehicles that frequently operate at low speeds in urban areas are more prone to engine emission system malfunctions. Frequently engaging high gears at low engine speeds can also lead to this issue. Fuel quality issues: Poor fuel quality can accelerate carbon formation, leading to carbon buildup problems that cause engine emission system malfunctions. It is recommended to disassemble the intake tract to check for excessive carbon deposits.
Last time when I was driving the Trumpchi GS5, the emission malfunction indicator light came on. Inspection revealed that the aging oxygen sensor caused an imbalance in the fuel combustion ratio, leading to excessive emissions. Additionally, carbon buildup in the catalytic converter blocked the exhaust system, resulting in noticeable engine vibration. A vacuum tube leak also introduced excess air into the exhaust gases. The EGR valve being stuck in the open position worsened the issue of exhaust gas recirculation. The fuel injector was clogged with impurities affecting atomization quality, and faulty ignition coils caused spark plug misfires leading to incomplete combustion. It's recommended to regularly clean the throttle body and use high-quality gasoline. If the light stays on constantly, promptly use a diagnostic tool to read the trouble codes instead of delaying, to avoid damaging the engine.
