Zhijun air flow meter malfunction | Zhijun car burns gas at 2000 rpm, refueling is not smooth, what is the reason for engine shaking

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What should I do if my Santana Zhijun cool car doesnt start at high idle? Hello! Regarding the question you inquired about, in a state of extremely low temperature, if the engine is started at high idle speed during cold start, it will exacerbate the wear of moving parts and reduce the overall working life of the components and even the engine; Because over 50% of engine wear is caused by cold starting. Therefore, it is normal for the engines computer to not have high idle for a short period of time during cold start when the temperature is too low. If there has been no cool car idling for a long time, it may be due to excessive carbon buildup in the idle motor, intake duct, intake valve, and combustion chamber. It is also possible that the front oxygen sensor or air flow meter has malfunctioned, which can be detected by a diagnostic computer. It is best to go to a 4S store for on-site inspection.

2. Gas Leakage Monitor

3. Santana Zhijun just replaced the air flow meter. What is the reason for high idle speed?

1. Introduction to Air Flow Meter. The function of air flow meter is to measure the fresh air volume and intake temperature entering the engine intake manifold., ECU performs fuel injection quantity correction, smoke restriction, and EGR opening control based on this information

2. Installation position: The sensor is installed on the engine intake pipe, at the rear end of the air filter. 3. Working principle: 3.1. Principle of air flow meter: The air flow sensor integrates some electronic components on a ceramic substrate. When the engine is working normally, it first heats the diaphragm, and when fresh air flows through the sensor, it takes away some of the heat. At th

is time, the ECU will control the Wheatstone bridge on the diaphragm to supplement the heat of the diaphragm, which will cause changes in the electrical signal. When the signal is transmitted to the ECU, The ECU will calculate the intake air volume based on this change. 3.2. The principle of the air temperature sensor. The intake air temperature sensor is a resistor with a negative temperature coefficient. When the intake air temperature changes, the resistance value of the resistor will change, which will cause a change in the signal voltage at the ECU end. The ECU calculates the intake air temperature based on this change. 3.3. Determination of airflow direction: There are two temperature resistors at each end of the hot film of the air flow meter. When the airflow passes through the hot film, it will take away some heat, so the temperature at the front end of the hot film is lower than that at the rear end. The ECU determines the direction of the airflow based on this signal! 4. Circuit diagram of air flow meter. 5. Control strategy: The ECU will constantly monitor the working condition of the air flow meter. When the ECU determines that the air flow meter has a fault, it will take corresponding control measures. The bending pin is as follows: 4.1. The engine MIL light will light up, the EGR system will stop working, and the exhaust gas will no longer participate in the system operation; 4.2. The engine speed will be limited to a certain speed, resulting in limited power; 4.3. When the air flow meter malfunctions, the engine can start normally without being affected;

2. Detection of air flow meter: Fault codes related to air flow meter

Zhijun air flow meter malfunction | Zhijun car burns gas at 2000 rpm, refueling is not smooth, what is the reason for engine shaking

2. Gas Leakage Monitor

3. Santana Zhijun just replaced the air flow meter. What is the reason for high idle speed?

4. What are the reasons for the engine shaking of Zhijun car when it

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