My 92' Honda Del Sol starts fine then idles all over the place then shuts off, what do I do?

My 92' Honda Del Sol starts fine then idles all over the place then shuts off, what do I do?

Added (1). The car will start then bounces from 1,000 to 3,500 rpm in neutral. After a few minutes it shuts off completely then has trouble starting back up. Everything in the engine is stock, I went in for a tune up a few months ago. Worked fine until a 2.5 hour trip to college then all the problems started up.

The idle circuit need to be check out. It could be something as simple as air in the cooling system, the FICV, the ICV. See this:

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