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car fuel level sensor fault repair
A malfunction in the computer power cord can lead to poor performance and reduced economy of the car engine, so you should check the computer power cord before replacing it. (The power cord must include the ground wire to be considered a complete power cord); If the voltage signal of the oxygen sensor is higher than the standard value, it may be that the sensor is contaminated . Many times , it will make the air fuel ratio richer . If the voltage signal of the oxygen sensor is lower than the standard value, it may be a sensor malfunction, which can cause the engine's air fuel ratio to become lean . When checking the oxygen sensor , a digital multimeter or oscilloscope must be used . If the oxygen sensor heater malfunctions , it may extend the engine's open loop working time and increase fuel consumption.
Once the oil level sensor malfunctions, there may be the following symptoms: the oil gauge scale may become fast and slow , and the oil gauge scale suddenly drops to zero in a short period of time . The value of the oil gauge scale has been increasing without decreasing , and so on . Car owners should pay more attention to these precautions when driving, and promptly repair any problems that arise.
Some cars have two oil level sensors in the fuel tank, one located on the left and integrated with the fuel tank, while the other on the right can be replaced separately . The oil level sensor is connected to a float, which is lightweight and floats on the oil surface . It is also connected to the oil level sensor . As the float is raised or lowered, the resistance value of the oil level sensor will also change . The signal from the oil level sensor will first be fed back to the JBE/REM/BDC computer module, which then sends the signal to the combination instrument , which then converts the digital signal into an image signal for display. Check the power supply of the oil level sensor and find that everything is normal. It can be directly determined that the circuit from the combination instrument to the JBE/REM/BDC module, and then to the oil level sensor connector is normal. Therefore, replace the right oil level sensor directly and the fault is resolved.
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