CHEVROLET CAVALIER ENGINE IDLE ROUGH

My Car Vibrates At A Complete Stop But Doesn't Stall. All Of The Fluids Are Up To Date And Fine. But It Only Does This Every Now And Then....

1994 Chevy Cavalier Mileage: 102,000. The Car Seems To Run Fine Except When I'm In Drive And At A Complete Stop Then It Idles Very Roughly...

Car Idles Rough But When Opened Up Runs Fine, Engine Light Is Not On