The new car runs 5000 kilometers. What is the reason why the 2.0t Mitsubishi engine can't catch fire in the winter morning in Harbin?

The cold car can't run at idle speed, which should be caused by ECU's misjudgment, resulting in the mixture being too thin or too rich.

First of all, we must use winter engine oil, because it is a new car, and there are few faults such as carbon deposition or stuck throttle. Then check the water temperature sensor and then check the crankshaft sensor. If everything is all right, check the oxygen sensor.

These sensors will transmit the signal of the automobile state to ECU, and ECU will judge the fuel injection quantity and intake air quantity accordingly. The judgment is wrong, the oil-gas mixture ratio is incorrect, and the car can't ignite normally.

If the sensor connector is loose, please reinsert it. If damaged, replace it in time.

Other possible faults include insufficient voltage, insufficient pressure of gasoline pump, damage of electromagnetic valve of activated carbon tank, etc. It rarely appears in new cars.