Another update, given that I’m nervous but can afford even replacing the turbo, it is probably the worst news I could have gotten as far as my nerves go. They tested the current actuator using Star Diagnostics and it activated and held pressure on the actuator without problem. This rules out several things: the actuator, and the hose connected to it. However, they do not know what it is and had to hold on to it another day for continued diagnostics. So I still don’t know what it is. If I did know what it is, at least I wouldn’t be left wondering.
I trust that these things are completely true for two reasons: 1) my history with this particular dealer places me in the odd position of trusting them almost implicitly, and 2) The dealer and service advisor were aware that if this could be pulled off for just the labor of replacing the actuator with my provided aftermarket part and associated diagnostics, I was planning on calling their sales rep and putting down a deposit on a $65k Sprinter order immediately, guaranteeing them a sale and my service business for years to come, continuing a 22 year history.
I mean, in truth, even if I do have to replace the whole turbo, that is what’s going to happen; may delay it a few months, but yeah.
If anyone wants to speculate on what it might be given that it isn’t the actuator or a hose, and that my fingers are crossed that I am not shelling out for an entire turbo assembly, I would love some false hope right now. 😂