Hello guys! Please help me! Drive nn Golf 4 150hp TDI ARL which no longer has any power. You drive 1-2-3 and then you go.Sudden power holes,power stays completely away, comes back -goes away-comes back.Absolutely irregular.Autobahn is a gray! Want to overtake a car,power away-comes back-away.Please help me!!!! VW workshop meant the control valve for the vacuum control on the turbocharger would be defective.I changed this,car ran 5 sec like crazy,and then again w he always! Please help me, the engine now has 33,000km down. Next the workshop meant to change fuellters.This also did not lead to success.What else should I do.More like 170km/h is not in it.You unfortunately only notice it right from the 3rd gear.The rod on the turbo is however smooth! Sorry read almost all posts but no one has really adapted to my problem. Thanks already now for any help…..