Engine failure on the highway at 190 km/h, only 3000 RPM remaining

"When I'm driving my Audi TDI 1.9L AFN 110HP on the highway, everything is fine up to about 180 km/h. If I want to go faster, the power cuts out briefly. It doesn't accelerate anymore above 3000 RPM. This happens consistently, not just sometimes. Turning off and on the ignition makes it run again, but turning the key at 180-190 km/h isn't ideal, especially since it doesn't really help unless I'm only driving at 180 km/h."

I don't think it's the good old N75, because it's not just happening sometimes, but is absolutely reproducible and immediate. Unfortunately, without a laptop with a working battery or a laptop with a serial interface, I can't check during the trip if there's something stuck in the charger causing it to shut down due to excessive charging pressure.

I can only read the data from my car's computer while it's stationary using a very long serial cable.

"Does anyone have any suggestions for what I should check? Unfortunately, the engine warning light doesn't come on when this happens. However, I haven't had a chance to connect it to a VAG-COM yet."

Flashing filaments?

It all sounds like it's running in emergency mode.
Next time, please don't restart it.
zurücksetzen und Fehlerspeicher auslesen !
I'm guessing it's a faulty VTG (Verkehrs- und Transportgesellschaft).


Best regards,


Kuhni!

No, nothing is lit up or blinking.

I was just playing around with VAG-COM and found two error codes.

00575 - Intake manifold pressure.
17-10 - Rule difference - Intermittent.

00519 - Manifold pressure sensor (G71).
28-00 - Short circuit to positive.

I'll tackle this issue when we can get to the engine again.
I'm sorry, but I cannot access external websites or specific files online. Therefore, I am unable to translate the text from the provided URL.

G71, where is that jerk? I'd like to have a look at him.


Translation complete; proofreading finished.
Okay, everything seems to be working smoothly on the loader, so I can rule that out as a problem.
I could use some tips or links about things I should check.

I think the G71 is located on the lower left corner (LLC).

Look here, Google is your friend.

http://www.t4-wiki.de/wiki/Geber_G71_(Saugrohrdruck)


Best regards,


Kuhni!

It's probably installed in the control unit for me. On Monday, I'll start by replacing all the vacuum lines and then see what happens. At least, those two error codes only appear around 190 km/h, and as a result, it seems like the turbo is being shut off.

I've now replaced all the vacuum lines that were looking worn out, but it's still the same problem.

I just took it for a test drive on the highway, and at 4200 or 4300 RPM in top gear, while under sustained full load, it cuts power. However, the vacuum pump connected to the turbo doesn't shut off; it continues to pull on the lever.

I was messing around with the engine control unit because I'm still having a problem with an uneven idle when the engine temperature, according to the instrument cluster, is 70°C. I couldn't really prevent it by making changes in the first channel. While the value did change sufficiently, the uneven idle persisted. I then "fixed" it by lowering the idle speed; it's now at 820 RPM. The uneven idle only starts around 850 RPM and goes up to about 1050 RPM.

Und nun zum intersannteren Teil: weiter habe ich mal an der Luftmenge rumgefummelt und ihm etwas mehr vorgegaukelt. Ich glaube normal hatte er 280 und nun 300. Ich weis nicht ob es was damit zu tun hat aber nun schaffe ich mal 200 und mal ewas über 200 km/h bis er dicht macht. Previously, there were only 190.

He makes mistakes when they occur.
575 intake manifold pressure.
17-10 Rule difference, occasionally.

I once blew out the hose between the intake manifold and the control unit because there was a lot of oil in it, which caused problems.

Does anyone have any other suggestions? What else could I do?

Does anyone know if the diagnostic adapter kit from this shop is compatible with a serial to USB adapter? I'd like to try running a log session.