What is the unstable idle speed of Liberty?

Hello: According to what you said, there are many reasons for this failure, both the circuit and the fuel system are possible. The main check is: 1 the starting voltage of the battery. 2. Whether the oil pressure of the fuel system has been completely released. 3。 Whether the spark plug, fuel injector and other parts work normally.

It may be because the fuel constant pressure performance of the vehicle's electronic control system is poor, and the fuel pressure is low, which leads to poor fuel injection atomization and difficult starting. Parking time is long, I suggest you try before starting. Open the key door until the instrument light is completely on and the sound of the oil pump is heard. After the sound is over, close the key door, and then repeat the above operation until the sound of the oil pump can hardly be heard. Then start over and you should be able to hit it once. Recently, the weather is very cold, and the engine has too much carbon deposit, and the mixture may be too thin, making it difficult to start.

Is the engine a hot start or a cold start?