A6/AEL: Why No Speed Above 3000 RPM?

Hello!

'I'm having this problem. The car accelerates normally up to 3000 RPM, but then it stops accelerating. There are no error codes stored. When using a diagnostic tool while driving, the values are correct up to 3000 RPM, but then the actual values for lambda (LD) and air mass drop.'

I've already checked the turbocharger boost hoses, and I don't see any other visible issues.

Who else can help me here...?

'Thank you.'
Sure, here's the translation:

'Best regards,' or 'Sincerely,'.
Okay.

Have you ever checked the needle lifter?

Let the engine run at approximately 3000 RPM, and then, by gently tapping the nozzle with the needle valve adjuster, the engine should not start to stumble. If it does, a replacement is necessary.

best regards

Hannes.

Hello.

First, thank you for your help.

But that's a dumb question. Can you explain to me what the needle lift valve has to do with my problem? Wouldn't a defective needle lift valve be noticeable through sporadic fluctuations in performance...?



Best regards.

Okay.

Hi,

"On my car, there was a hose (about 5 mm in diameter) that was located very close to the EGR valve. A broken cable tie caused it to come into contact with the hose, which then melted."
To inspect it, you need to remove the upper motor cover.
I no longer remember exactly whether it connects to a sensor for measuring pressure or vacuum, but the resulting effect was similar.
Performance is normal up to approximately 3000 RPM, after which it drops off significantly.

Olli.

It started with occasional jerking when my NHG (presumably a type of engine or component) was faulty, and it happened more and more frequently. Eventually, I also experienced a complete loss of power under heavy load.

Also, you should also check the CAT (computer-aided translation) tool to see if it might be malfunctioning.

best regards

Hannes.