What is the reason why the idle speed of FAW senya m80 is a little unstable? Is the throttle washed or shaken?

Vehicle jitter is a common phenomenon at low speed and idle speed.

Because the engine jitter is the worst when idling, if it is sudden jitter, you can consider readjusting the engine fixing bolts first.

The second common reason is that

Dirty throttle body

and

Nozzle atomization or poor ignition of spark plug.

Checkable

Whether the ECU has an error code.

And whether the corresponding water temperature sensor and throttle opening sensor work normally.