CHEVROLET CAVALIER ENGINE REVS UP

I Have A 89 Chevy Cavilar. My Problem Is Sometimes It Increases Engine Rpm All By It's Self. It Seems Like Something Is Sticking. Sometimes...

1997 Chevy Cavalier My Car Is In The Shop Because Yesterday It Sputtered Once Like The Brakes Were Failing, Was Making A Strange...

There Is A Rattling Noise Coming From The Front (passenger Side) Of The Engine. Increasing Rpm Makes It Less. Drives Fine Otherwise.