Odd revving on 98 accord w/ 3.0 Vtec
 

This car has always given problems. Recently we changed the distributor and spark plugs. But when I start the car it revs at 1000 for like a minute, then without even pressing the gas it starts fluctuating from 2000 to 3000 rpm. I press the gas and let it go and it keeps doing that. When I try taking off it only rolls for a second and then it shuts off on me. When I'm at stops it revs super low like less than 1000 rpm and it sounds like it's gonna shut off on me. It's not until about 15 or 20 minutes of driving it that it stops doing that. I have a feeling it could be the throttle but I've cleaned it with carb cleaner and it still has the same problem. Any one please help me out I'm pretty desperate