Fiat Stilo 2004 (squeak when I left the clutch)

From what you comment, it may be that you have some touched alternator bearing, or the other fixed roller of the mixed belt.

When putting a new belt, the tension is greater and the pressure on the bearings of the different accessories (alternator, assisted steering pump, air conditioner compressor, tensioners ...) is also greater, if there is any bearing asking for relief the new belt denotes its presence.

Another thing that can happen is a poor voltage in the belt, so that at the time, the engine is unstable (not because it stops, but because its turn consists of acceleration and deceleration movements each round that becomes vibrations in the belt).

That instability in the turn makes the different accessories skate at each motor turn.

To see if this is the cause, it is very easy, slowed down, light the air conditioning, raise the hood and see if the belt vibrates and if it sounds like a \ "tablet \". If so, the belt is loose. Another way of looking at it is when starting cold and turning the assisted direction to make the same way or start screaming (those straps are little).

All the best.

Thank you very much to both of you, it seems great to the operation of this forum, the very simple answers and explanations, I just got the weekend out, I thank you very much of your answers, since apart from solving problems you clarify the mechanical functioning of the vehicle of the vehicle to which we do not know the mechanics, tomorrow morning I will put myself with the car to do the different tests that you have contributed to me.

Thank you very much greetings

In my opinion and for the data k we give us it looks like one of the rollers or tensioners, look at if you can appreciate any rarity in the rollers, k are chopped by some ok they have olgura

Good to all! The problem was a roller but the mechanic has told me that it is not serious but that I do not get used to going first with the clutch, which steps on it as if it were a gasoline, you were finally well aimed at almost all but thanks to this forum I went with something very clear to the workshop! that the problem was in the alternator not in the motor steering wheel as they told me at the beginning or in the distribution strap .. I have been told that I can circulate without problems and that when I want to change it that brings me closer to me ... JA ... JA to 50 euros that has the Fiat time and of the workshop ...

you who think about whether it is important to change the roller or not?