What is the reason why the car is "panting"?

Car "pant" mainly has the following reasons:

1, the PVC check valve is blocked, which leads to the exhaust gas in the crankcase not being discharged in time, so it is discharged from the crankcase air inlet and reaches the throttle position. After a long time, the throttle valve has oil deterioration symptoms, so it is recommended to replace the PVC valve in time;

2. Inappropriate closing of carbon canister control valve;

3. The reason of idling jitter may be that there is something wrong with the hydraulic foot pad of the engine. Test drive after replacement to see if the symptoms have been eliminated;

4, water temperature sensor plug failure, resulting in mixed gas concentration problems.