noise coming from my car i hate

  1. #1
    when im drving off from a still postion.
    i will get to around 10MPH then change gear then when i let
    my foot off the clutch there is the horrible sound its like
    the revs are still reving even tho they not..its hard to
    describe.. then i will change to 20MPH and change to 3rd
    and the noise is still there..

    anyone know what it could be..ii did over rev the car once
    but surly that will not make a difference
  2. #2
    try replacing the idle control valve, this should help