What are the causes of engine management system malfunctions?
2 Answers
This indicates ECU damage. The ECU is the engine's control computer, often referred to as the brain of the engine. Without an ECU, a car's engine cannot operate normally. If the ECU is damaged, it needs to be replaced directly. There are many factors that can cause ECU damage, such as water ingress, high temperatures, etc. Below are some engine maintenance and care methods: 1. Regularly clean the car's crankcase: During engine operation, high-pressure unburned gases, sulfur, moisture, nitrogen, and acid oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls. These substances mix with metal powder from long-term wear of parts, forming sludge. Therefore, it's essential to regularly clean the crankcase to maintain the engine's internal cleanliness. 2. Regularly clean the car's fuel system: To maintain the engine, proper care of the fuel system is crucial. Periodic cleaning of the car's fuel system can control carbon deposit formation, thereby keeping the engine in optimal condition.
I've encountered engine management failures several times, usually caused by faulty sensors. For example, when the oxygen sensor gets dirty or fails, the ECU can't determine the correct air-fuel ratio, resulting in engine shaking and high fuel consumption. A malfunctioning throttle position sensor providing inaccurate signals can also cause jerky acceleration. Wiring issues like aging or water-induced short circuits are common too - corroded connectors may lead to ECU misjudgment. Problems with the ECU itself, such as water damage or voltage overload, can completely disrupt the control system. Regular maintenance like cleaning engine carbon deposits and checking connectors is crucial, as these small issues can accumulate into major failures like sudden stalling on highways, which is extremely dangerous. It's best to periodically scan for error codes at repair shops and replace damaged components promptly.
