desperate

Very good, I am desperate with my focus of 2003.
If you walk with it, especially in long marches there comes a time when the turbo cuts, the car enters emergency mode and nothing, that loses strength. The car is but without turbo, I turn it off and turn it on again and it is going well, but it fails me again it takes time it soon fails.
The turbo is changed, the turbo pressure valve too and esq is already looked at everything and there is no way.
I even took the power switchboard told me that the switchboard was wrong and nothing that continues with the ruling.
I don't know what to do or look at him anymore. Thanks in advance.