'94 Caprice LT1 Revving Itself

Car was running fine and now it started revving itself without me pushing on the gas.
I'm assuming it's a sensor but not sure.
Anyone had this problem before?
I would greatly appreciate the help. I can't afford to put a lot of money into this car.

Is the check engine light on?

Yes

First, you will need to have the car scanned for codes.
Post back your findings for additional help..