I have this weird problem with my 91 accord.. The idle is set at around 1000. Occasionally, the idle will drop from 1000 to about 200(almost stalling) and jump back up to 1000, and drop again. It just keeps on doing this for a while, and it goes away and comes whenever it feels like it. I hadnt noticed it much, and then it did it again today. Hopefully someone knows how to solve it.

thanks