Why is ZTE's idle speed occasionally high?

This question is normal. Next time you encounter this problem, you can try to add another accelerator and the problem will disappear. If this method works well, it is mostly a soft fault. You can go and see if there is a phase sensor on the cylinder head of your engine. If not, it can basically be determined that the data program of ECU (on-board computer) is a soft fault, because there is no phase sensor (mainly measuring the position of vertex to determine the ignition time and fuel injection time, and some engines will be omitted and replaced by Quzhou position sensor). In some cases, when processing data, ECU can't compare with crankshaft position signal, and its response is slow, and sometimes even "fake death" occurs. At this time, if you downshift and slow down, it will show that the idle speed is high. In fact, the oil is still parked at the position where you just gave oil.