Friends have a tangle in all this, the IAC valve, step by step, or Rerenti regulator is all the same thing, there are different types of this actuator is the most common that is of the Bosh type that is the one of the enough one that enters and leaves, this has a complete route of 8 millimeters it regulates the computer and the correct installation form for this specific type Approx, then you open the contact for about 15 seconds, you close it 15 seconds, you open it again 15 seconds and you close it 15 seconds, this operation is repeated about three or four times in the last day the Arranke and this is already done, this is done in VW, Fiat, Chevrolet, Daywwod and all the ones have this guy,
then the Ford regulator comes, which is different because it works in low and also regulates it, it also regulates it. Ford and prostage is basically the same. Only it works differently since it is a type of membrane that moves slightly is almost impersipible to the human hat.
And then it is the one that uses Hyndai that is a menbrane that opens a ahujero in this case is commanded by water temperature and works based on it. Displaying directly to the real temperature of the vehicle this type is affected when the temperature sensor or NTC sensor is in poor condition.
Anyway, it is difficult for a scanner to throw this type of failure since being an actuator and not a sensor the computer does not read its brother except in the case of Fiat and Nissan Ke if it is diagnosed by the computer.
However, the problem of high acceleration in relief more than in the game and when the vehicle stops in a semaphor or eskina, it can be available to many factors being one of the most common the poor state of the clutch disc, false air inputs, air filter in poor condition or air inlets after flijometro no of the MAP.