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Engine Control System Troubleshooting Guide The Premium trade data intelligence subscriptionsmotive is the vehicle.It is one of the core components, and the engine control system is an important part of controlling the work of the engine. When there is a problem with the engine control system, it will affect the performance of the engine and even cause serious safety problems. Therefore, it is very important to know how to troubleshoot the engine control system. This article will introduce some common engine control system failures and provide some useful troubleshooting tips. Fault 1: Difficulty in starting the engine. Difficulty in starting the engine may be caused by a variety of reasons. If the engine can't turn, it is likely that the battery is low or the starter is malfunctioning. If the engine rotates but cannot start, it may be caused by ignition system failure, fuel system problems or sensor damage. At this time, you can check whether the ignition coil, spark plug, fuel pump and sensor are working properly, and check whether there is a flashing fault code that cannot be locked.Fault 2: Unstable engine idle speed. When the engine idle speed is unstable, there is often jitter, low oil pressure or irregular vibration. This may be caused by ignition system failure, air flowmeter failure, ozone sensor failure or air intake duct blockage. At this time, you can check whether there is a problem with the ignition coil, air flow meter, ozone sensor and intake duct, and pay attention to whether there is a fault code. Fault 3: Insufficient engine power. If the vehicle's acceleration is not ideal or it is difficult to climb, it is likely to be caused by insufficient engine power. Usually, this may be caused by excessive fuel, too little air, too thick fuel or failure of the ignition system. At this time, you can check whether there are any problems with the fuel pressure, air flow meter, ignition system and exhaust pipe. Fault 4: Poor engine heat dissipation if the engine is runningThe poor heat dissipation effect may be caused by radiator blockage, insufficient heat sink or failure, pump failure or heat exchanger failure. The troubleshooting method is to check whether there is leakage in the cooling system and whether the coolant meets the standard, and to check whether the radiator, pump and heat exchanger are working normally. Fault 5: Engine emissions exceed the standard. If the exhaust emissions of the vehicle exceed the environmental standards, it may be caused by the failure of the exhaust system, fuel system or control system. At this time, you can check the emissions of carbon dioxide, oxygen and residual hydrocarbons, and pay attention to whether there are emission-related fault codes. To summarize, the above are several common engine control system failures. If your vehicle has the above problems, you can follow the above tips to troubleshoot. Please note that due to the different structure and model of the vehicle, the specific troubleshooting methods and maintenance methods will be different.If you encounter an unsolvable problem, please ask a professional maintenance technician for help immediately to avoid more serious safety problems. Finally, we strongly recommend that you carry out regular vehicle maintenance and inspection to avoid engine control system failures.

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