Translation of "Impulse" in Chinese

I felt an impulse to cry out loud.

我突然好想大叫。

He told his wife not to buy on impulse.

他叫自己的妻子不要衝動購物。

- He told his wife not to buy on impulse.
- He told his wife to stop impulsively shopping.

他叫自己的妻子不要衝動購物。