Jim Nissen's throttle speed drops, shaking and stalling.

But as long as you let go of the throttle, it will turn off. This is a sign that there is no idle speed.

Because the automobile engine will enter the idle state after the throttle is completely released, the engine cannot enter the idle state when the throttle is released. The common reason is throttle idle control.

There are two kinds of gas throttles commonly used in automobiles: cable type and electronic type.