Sounds like idle is set too high. First, try with the white adjustment screw underneath the carb. Clockwise, seen from above, counterclockwise from below.
To set idle, just drive it until the engine is hot, 10 minutes or so, then set idle with the white screw. Don't set idle when cold, because it will afterwards rev like yours when the engine is hot.
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2005 "Saturn Black", stock + tach
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