What is the intermittent jitter of Cruze idle speed?

Pacific Auto Network 1, the idle switch is not turned off. 2. Idle speed control valve is faulty. 3. Air inlet pipe leaks. 4. Wrong valve timing. 5. The fuel injector leaks or is blocked. 6. The exhaust system is blocked. Cruze is a compact car owned by Chevrolet. This car is equipped with two engines, one is a 1.5 liter naturally aspirated engine and the other is a 1.4 liter turbocharged engine.

It is normal for Cruze to have slight jitter when idling, but it needs to be checked if the jitter is serious. Check your engine, spark plug and ignition coil in turn. If these are all right, then clean the throttle and nozzle, which can generally eliminate jitter.

Possible causes of idle jitter: 1. The engine carbon deposit seriously leads to vehicle jitter, and the most common reasons are that the throttle is too dirty or the fuel injector has too much carbon deposit. When there is too much carbon deposit in the engine, the gasoline sprayed by the fuel injection head will be absorbed by the carbon deposit during the cold start, which leads to the lean mixture during the cold start and makes it difficult to start. In this case, only when the gasoline adsorbed by carbon deposits is saturated, it is easy to run into the car. After running into the car, the gasoline adsorbed on carbon deposits will be sucked into the cylinder by the vacuum suction of the engine for combustion, which will thicken the mixture and dilute the combustible mixture of the engine, resulting in idling jitter after cold start.

2. Ignition system problems Check the working conditions of spark plugs, high-voltage lines and ignition coils. Poor working conditions of ignition system and spark plug can also lead to such failures.

3. The oil pressure is unstable. If the engine carbon deposit has been cleaned, the throttle valve has been cleaned, and the spark plug has been replaced. , the body is still shaking at idle speed. It is recommended to check whether the oil supply pressure and intake pressure sensors are normal. If the oil supply pressure of the oil pump is abnormal or the value of the intake pressure sensor is wrong, the car body will shake.