Pontiac Repair: 3000 rpm idling, vacuum leak, idle air controller

Question
HI,
PONTIAC TRANSPOT 1991 , 3.1 L
STARTS FINE RUNS ABOUT 1000 RPM TO START OF AS SOON AS YOU START DRIVING RPM GOES UP TO 3000 RPM AND WON'T GO DOWN ANYMORE , NOT IN NEUTRAL,PARK ETC.
WANTS TO GO !! ANY IDEA TO CALM HER DOWN ?

Answer
Hi
I would first suspect a Vacuum leak, either external or internal. Excessive vacuum will cause a high idle. if external, You should be able to open hood and hear the leak, it'll be a hiss-ing sound, loud to cause a 3k rpm idle.
You could then get the IAC (Idle Air Controller) checked.
Lastly I would have the Throttle body and linkage checked to make sure it is not binding or sticking.
Take it to a local repair shop and have it scanned for codes and let the mechanics look at the data. They'll see abnormal data to help in diagnosis.
Hope this helps.
Just Advice from experience.
Good Luck
Pawl