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The casino plus free 100engine is the heart of the car, and the sensor is the "nerve terminal" of the engine. It is responsible for collecting the parameters of the engine and converting them into electrical signals, and then transmitting them to the car control system for analysis and control. The failure of the sensor will cause the performance of the engine to decline or even fail to start, so it is very important to diagnose and solve the sensor failure in a timely and accurate manner. I. What is an engine sensor? Engine sensor is a kind of sophisticated electronic device. It can sense and record various conditions of engine operation, such as air flow, temperature, pressure, speed, etc. The collected data will be transmitted to the control module for analysis and judgment in order to optimize the working parameters and ensure the normal operation and efficiency of the engine.At present, there are mainly the following types of sensors on the market: 1. Swing arm sensor: detects crankshaft speed, ignition timing and position sensor, etc. Two. Pressure sensor: detect engine oil pressure, intake pressure, exhaust pressure, etc. 3. Temperature sensor: detects ambient temperature, engine coolant temperature, air temperature, etc. Four. Gas sensor: detects engine intake, air-fuel ratio, oxygen concentration, etc. II. Performance of engine sensor failure When the engine sensor fails, it will lead to problems such as vehicle performance degradation, difficulty in starting, and ineffective fuel saving. The following are the common performance of engine sensor failures: 1. Air-fuel ratio misalignment: If the oxygen sensor fails, it will not be able to detect the oxygen content in the engine exhaust gas, resulting in insufficient or excessive oil supply to the engine, thus consumingFuel is ineffective, reducing energy utilization, and may lead to abnormal emissions, affecting the legal operation of vehicles. Two. Difficulty in starting the engine: If the crankshaft sensor or ignition timing sensor fails, it will cause the vehicle to be difficult to start or unable to start at all. In addition, if the engine coolant temperature sensor fails, it will make it difficult for the engine to start. 3. Unstable operation of the engine: If the oil pressure sensor fails, it will cause the engine oil pressure to be too high or too low, resulting in high engine noise, abnormal vibration and other unstable phenomena. Four. Insufficient engine air intake: If the gas sensor or air flow sensor fails, it will cause the engine air intake to be insufficient, resulting in the engine shutdown or the abnormal phenomenon of not being able to run normally. III. How to diagnose and solve engine sensor faults?Before diagnosing the engine sensor problem, it is necessary to check whether the vehicle has a fault code. For some engine sensors such as rear-mounted oxygen sensors, crankshaft sensors, ignition timing sensors, etc., if there is a failure, the vehicle will display the corresponding fault code. In this case, you only need to use the diagnostic instrument to read the fault code to clarify the scope of the sensor failure. If the vehicle does not have a fault code, but there is still an engine failure, a routine inspection is needed at this time. First, check whether some major parts of the engine are normal, such as checking the ignition system, fuel system, etc., to determine whether it is related to the engine sensor failure. If it is determined that it is an engine sensor failure, you need to accurately find the problematic sensor first, and then replace it. Before replacing the engine sensor, it is necessary to make sure that the disassembly is clean and replace the new gasket and screws.Then reinstall the sensor, and then connect the vehicle to the diagnostic device for rematching to ensure that the new sensor can work properly and better cooperate with the system. In general, timely detection and solution of engine sensor problems play a very important role in maintaining the normal operation of the engine, improving performance and saving energy and emission reduction. Therefore, when driving a car, it is necessary to pay attention to the performance of engine failure as much as possible, and send the vehicle to a professional repair shop for inspection and maintenance in time to ensure that the vehicle can always maintain the best operating condition and performance.

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