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一辆捷达电喷轿车,行驶46000km后,出现了怠速时转速过高现象。当时,驾驶员曾通过自诊断系统查找故障部位,结果故障灯显示正常。车辆送修后,为验证驾驶员提供这一结论的可靠性,我们拿专用的检测仪器,重新读取故障码,结果也显示无故障。 然后,按下列顺序进行外部检查:1.加速踏板联动机构;2.点火正时元件;3.节气门位置传感器;4.燃油压力传感器。当检查到燃油压力传感器时,发现由这里连接到进气歧管
A Jetta sedan, driving 46000km, appeared when the idling speed is too high. At that time, the driver had to find the fault location through the self-diagnostic system, the fault light showed normal. After the vehicle repairs, in order to verify the reliability of the driver to provide this conclusion, we take special testing equipment, re-read the fault code, the results also showed no fault. Then, carry on the external inspection according to the following order: 1. accelerator pedal linkage mechanism; 2. ignition timing element; 3. throttle position sensor; 4. fuel pressure sensor. When checking the fuel pressure sensor, it was found that it was connected to the intake manifold