The car started at an idle speed of only 500 in the morning and then put out the fire.

The phenomenon of this car is not the failure of oil and oil circuit, but the failure of low temperature throttle valve and temperature sensor or connecting chip. When a car is started, there will be an inductive temperature probe of a temperature sensor, which will automatically transmit the temperature of the throttle and the body to the computer chip on the car. According to the fuzzy theory, the computer chip will control the throttle to adjust the idle speed of the car, and then release it completely when the temperature meets the requirements. In the early stage, the idle speed was required to be high, and after the temperature detection was appropriate, the chip instruction was lowered again and finally turned to normal.

As you reflect this situation, I suggest you go to a professional maintenance station for testing, just replace the thermal head or chip, and you don't need to repair it indiscriminately.