1991 ford taurus sho, stays at high rpms. Any answers on why this is happening? on 1991 Ford Taurus

As I shifted from first to second at around 4000 rpms a loud noise occurred as I let the clutch out. I pushed the clutch in and it idled at 3000 rpms on it's own. I'm wondering why this is occurring as I would like to get the car back to regular working condition, thanks!

Asked by for the 1991 Ford Taurus
shift cable along with poss vac leak
Where is the vacuum hose located? is it visible from looking above or will i need to get under the car?
1 more answer , 1 more comment
possible shift cable... get it looked at my your preferred mechanic