teileklaus's - T5 Leistungsmangel Thread zum Log | Posts 16+

Yes, that's correct - they are not directly comparable. However, the performance should still be present even with a DPF (Diesel Particulate Filter).
"It's registered with 174 horsepower."
and it is regularly and thoroughly cleaned from the beginning of every emergency response deployment!
Let me see how quickly the top speed limiter is activated. That blue bar reduces the speed by 10 km/h, but up to 155 km/h, and 10 to 15 km/h less on a flat surface. There should definitely be a noticeable lack of power.
I once asked Rainer about it...
Thanks to all the contributors who have stuck with it so far.

Brief update:
The LDR valve was replaced under warranty, which improved the undershoot, but didn't significantly affect performance.
Now, after another 2 months, the emergency mode has been activated again: Error code 665 LD (P 0299-000-) indicating a sporadic underperformance.
Conditions: RPM 2079 / min.
V: 111.0 km
Last 100%.
Should be 2325.6 millibars.
is 1917.6 mbar.

Test with test drive: no limp mode.
Suggestion for a new turbocharger: Hot-side clamp?

According to my logs, which I created around 3 AM last night, ...
Between 1700 and 2200, the boost pressure did not build up properly, nor did the lambda value (LM).
This also aligns with the driving experience at 1500 mbar and 2300 rpm.
There's still a climate control issue that needs to be fixed, and there's also a slight leak in the water pipe near the soldered joint. Additionally, the emergency system hasn't activated for three days. A new appointment has been scheduled for next week, including a turbo replacement!

Hi,

Please also check the DPF loading status, ash content, and differential pressure under full load (refer to documents MWB 67/6.

Best regards, Rainer.

Hi Rainer - thanks, I will do that. Does it also include a comparison of target values and actual values?
Think about whether you might want to do something "gentle" instead?
The service technician mentioned a "possibly intentionally more conservative default setting" (my thought: possibly to protect the DPF).
"The other workshop foreman: "This is probably the same old problem; the valve is faulty. The coolant hoses and bypass hoses are fine, so we'll need to replace the turbocharger. I've already spoken with the parts supplier about it."

Hi Klaus,

"Sorry, I'm not referring to the intended use of the vehicle. I don't have a target value for the differential pressure, but we could identify unusual values by comparing them with other vehicles."

Best regards, Rainer.

Hi (low) Rainer .
That makes sense - I hope the turbo brings about a change.
Wednesday, I'll send you the data.

Hello (Rainer?),
I once read out the error codes MWB 67 and 68.
Only retrieval by a Large Language Model (LLM) was possible because the emergency vehicle had to remain operational.

MWB 67 : 114 Temp, 102 Temp, 255 hPa , - 22,15 Diff. Print.
MWB 68: 0.0%, 30g ash, 0.0%.

Okay, now I see that with 30g of ash and a pressure of 255 hPa, the filter should still be relatively clear. Are there any other insights to be gained from these values, or do I only get those readings under full load?