What is the reason for Toyota VIOS idling jitter?

Air intake system failure: too much dirt on the throttle and air intake or the air filter element is blocked, the cross-sectional area of the idle channel becomes smaller, the air entering the cylinder is less than normal, the mixed gas becomes thicker, and the cylinder is not fully burned, resulting in engine jitter.

The intake pipe or EGR valve leaks, the amount of air entering the cylinder is greater than the normal value, the mixture becomes thinner, and the dynamic performance of the cylinder decreases. If the EGR valve is not tightly closed, part of the exhaust gas will enter the cylinder, resulting in high residual exhaust gas, deterioration of the combustion situation, and engine power decline, leading to engine jitter.

Extended data:

Precautions:

1. Before the new car is used, check the gas pipeline, gas supply device and electrical parts to see if the gas seal is lax and the line contact is unreliable, and eliminate it in time. Pay special attention to whether the connection of the circuit part is loose, especially the insertion place of the solenoid valve; Whether the ignition high-voltage line is virtually connected, etc.

2, pay attention to check whether the battery voltage is enough, because the engine ignition and electronic control system needs enough voltage, so pay special attention.

3. If it fails to start for three consecutive times, the gas part and the circuit part should be carefully checked again.

4, pay attention to observe the gas stock, refueling in time. When filling gas, it shall comply with the relevant provisions of the filling station and be operated by the operators of the filling station. Check the tightness of the gas system when refueling.

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