Asked the mechanic as well about the turbo or anything else and he confirmed that it can't be the turbo. The main dealer and another mechanic (friend of my uncle) said the same that it's the PAS system.
Also, I haven't felt any issues with the...
Is still produces the sound even if it just sits at 2000 revs. The sound is directly proportional with the revs. Asked the mechanic if it could be a bearing and he said that he already checked that.
Thanks a lot!
I've showed this video to my mechanic after you've posted it. He watched it and confirmed having done the same. He measured the pressure in my pump and the values are perfect.
At this point he gave up...
The header tank has a filter in it that can get blocked. As it is easy to change and much cheaper than a pump or steering rack it makes sense to change that first. Normally noisy power steering is due to Air in the fluid or starvation of fluid on...