What is the high idle speed of KIA Orie?

It is normal that the idle speed is high when the cold car is started. This is a program designed by a computer. However, if there is a gap compared with before, the idle speed is high, which may be caused by carbon deposition, and it is necessary to clean the throttle body and idle valve; High engine temperature is related to many factors, such as insufficient coolant, low oil level, blocked circulation system, bad electronic fan, etc. This requires a comprehensive inspection.

Reasons for high idle speed of automobiles:

1, idle speed control valve failure

The normal idle speed of EFI engine is determined by idle speed control valve. According to the engine speed, temperature, throttle switch, air conditioning switch and other signals, the electronic control unit will increase the intake bypass passage of the idle speed control valve or directly increase the throttle opening after calculation, thus increasing the air intake and improving the engine idle speed.

If there is oil pollution and carbon deposition, the idle speed control valve will jam or the throttle valve will not close normally, which will make the electronic control unit unable to adjust the engine idle speed accurately.

Solution: Check the action sound of idle speed control valve. If there is no action sound, the idle speed control valve is faulty.

2. Air leakage in the air intake system

In general, the air intake must be strictly limited. If the air intake pipe leaks, the air flow sensor can't measure the real air intake, and the electronic control unit can't accurately control the air intake, which leads to the unstable idle speed of the car.

Solution: First, find the leakage point, reseal or replace the relevant parts.

3. The oil nozzle leaks or is blocked

The fuel injector leaks oil or is blocked, which makes it impossible to inject fuel according to the instruction of the electronic control unit, thus causing the mixture to be too rich or too thin, resulting in poor operation of individual cylinders and unstable idle speed.

Solution: Measure the fuel injection quantity of the fuel injector. If the fuel injection quantity exceeds the standard, it means that the fuel injector is leaking.