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TDI Poor Performance: Troubleshooting & Help

 
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Cupra
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Post08-10-2002, 11:44    Subject: TDI Poor Performance: Troubleshooting & Help Quote

Hi!
I'm new here and already have a question...
Ich fahre einen Cupra TDI, welcher laut Leistungsprüfstand 164 PS und 330 NM hat. Trotzdem ist der Wagen im Durchzu total schlapp. (Im vergleich zu anderen Cupras fehlen ca. 2 sec. beim Beschleunigen von 60-100 im 3. Gang)
All measurements are within acceptable limits (according to the diagnosis).
I hope someone can help me.
Markus.


Translated on 28-10-2026, 6:28.
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Michael II
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Post08-10-2002, 11:56    Subject: TDI Poor Performance: Troubleshooting & Help Quote

Hello,

Could you please post the measurement readings?
Tschüss

Michael II


Translated on 28-10-2026, 6:29.
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Cupra
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Post08-10-2002, 13:14    Subject: TDI Poor Performance: Troubleshooting & Help Quote

Sure:
P-Norm: 118.5 kW
P-Mot: 120.4 kW
P-Rad: 97.1 kW
P-Towing 23.3 kW
Torque: 329 Nm.
The values are all okay.
Even with multiple memory reads... No errors displayed!
All values were measured while driving. All are within the normal range.
However, the expert from Seat and I agree that there is not enough power.
As I also noticed from the comparative measurements in the Seat Leon forum.
Is there a description of the ULF test available anywhere?
It might provide further insights...
Sure, here's the translation:

'Thank you.'
Markus.


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Michael II
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Post08-10-2002, 13:22    Subject: TDI Poor Performance: Troubleshooting & Help Quote

Hello,

Sorry, I probably didn't explain myself clearly. I meant the measurement data from a diagnostic run (where current data is saved from the engine control unit). Your Seat dealer can probably do this for you.
Tschüss

Michael II


Translated on 28-10-2026, 6:31.
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Cupra
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Post08-10-2002, 13:35    Subject: TDI Poor Performance: Troubleshooting & Help Quote

I'll also check the values, but probably not until tomorrow or the day after. But as I mentioned, they are all within the normal range, not a single one is below the expected level.
Markus.


Translated on 28-10-2026, 6:32.
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ulf
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2023 MG ZS
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Post08-10-2002, 14:37    Subject: TDI Poor Performance: Troubleshooting & Help Quote

Cupra wrote:
Is there a description of the ULF test available anywhere?
That could
provide further insight...

Hi Markus,

We haven't written a user manual yet...

In short:
Please enter all the required vehicle data or measure it during the rollout test.
Then the calculation will output an approximate target time.

Once the actual time has been determined, you can adjust the target time by entering values in the fields for over- or under-performance. This allows you to see how much power the motor is lacking or producing based on the changes you've made.

Or use the "target value calculation" function (?) icon_redface.gif, which I haven't tried yet.
Gruß Ulf
_________

MG4 Electric


Translated on 28-10-2026, 6:33.
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