1999 Saturn SC1 Check Engine Light On & Idles Very Fast

What codes do u have?Go to a auto parts store and have ur codes read. That will help to figure out what's going on.I doubt ur intake manifold gasket is leaking the 2000 and up sl1 usually leak from the gasket.I mean it's possible check ur S shaped hose that goes from ur intake manifold to ur pcv they get holes in them and cause a high idle.U can also get a can of carb spray and spray around any where u think there's a vaccum leak while the car is at idle if the idle goes up or stumbles or dies out u have a leak there. Let me know what u find.