rough idle
 

My car runs great except that the car has a rough idle it "idle" around 800 rpms once warmed up it just goes up and down somewhere in between 950-650ish range, does anyone know what could be causing this? Ive checked all my vacume hoses and there all good, does anyone know of anyone in the jacksonville/orange park fl area that I can take my car to to get it checked up on?