chadalac1712

when i just first crank my car up its fine. 800-900 idle. if i rev it up it goes back to that same idle. but i move 2 feet in the car and stop it drops to 200rpm and feels like it is about to cut off on me. it never does but it goes in and out. what could cause this? im getting it cammed in 3 weeks so if i need a tune that can wait.