I got my turbo repaired, the service told me that stopped working due to a sensor that had to be changed. It costed me a lot because they told me that the sensor was inside the turbo and it was hard to change.
After complaining about the car not running smoothly on lower RPM, they changed two solenoid valves which were not closing or opening properly. Still after this I get the same behaviour that is describe in detail below.
The car in not running smoothly at normal driving RPM, if I accelerate more I don't fill the jerkiness, which by the way is not continuous, but repeats regularly about avery 3-5 seconds,can be easily observed by driver and it is clearly more visible if the car is going up towards a hill.
If I'm thinking more, I quite similar with whats happening when you try the wrong gear.
Car details: Peugeot 307 2.0HDi / 2004, 95.000km.