Thank you very much for the fast response.
I was worried because after I change the condenser, the filter and the pressure valve, last year the ac was not working as good as before.
And as a mater of fact I just come back from the mechanic because the pressure valve had stop working again.
And I was thinking that maybe the poor Ac performance has to do with the radiator fan, Which starts later on not immediately and that the second speed starts only on traffic as you described.