Passat 3C 125kW zieht nicht mehr richtig | Posts 16+

Okay, I'll do a little searching today.

Huh?

Quote:

Huh ?

Yes, exactly. A very beautiful picture for someone who is still able to distinguish the individual colors .

A complete CSV file with descriptions (including when, how, and what) would be much more informative.

We can visualize this ourselves (using KDataScope), if necessary.

Hello,

@cck: I expect that the instructions in the link I provided will be read and followed.
Otherwise, we can end this discussion here, as so far, all we've received from your side are useless logs/files.

Best regards, Rainer.

@ Diesel mechanic, sorry.

Here are some log files; hopefully they will be helpful... The error is present in all of them.



Description:

In all gears, it's very sluggish, especially in the 5th and 6th gears when accelerating fully. The turbo doesn't kick in until around 2200-2300 RPM.

Here are some more potentially useful log entries.

Sure, here's the translation:

'mhm' translates to 'uh-huh' or 'hmm' in English. It can be used as an acknowledgment, a sign of agreement, or a way to show that you are listening.


The BMW engine in the Touran also doesn't start to provide noticeable power until around 1900 to 2100 RPM. Below that, it feels pretty sluggish, and the higher the gear, the slower the power builds up.

Quote:

LOG-01-008-010-011-4.CSV

Gratulation zum sinnvollen Log.

Since the registration process is working somewhat, the problem is likely caused by one of the following reasons:

See posts by dieselmartin and Autoservice.

Autoservice wrote:

Quote: P0299 - 006 - Limit below threshold - Intermittent I've encountered this error twice recently. In both cases, the vacuum system was affected. Irgend ein Bauteil ist dort wahrscheinlich undicht.

Hello.
I experienced the same issue with my A4 B6 equipped with an AVF engine. The small hose connecting the vacuum pump/turbocharger pump to the vacuum reservoir (the black sphere) next to the turbocharger had "expanded" due to heat and was loose on the connections. This line also contains a plastic check valve, and the thin membrane inside it is prone to failure.
"It was blowing air in the wrong direction for me. I replaced the entire vacuum hose system, including the check valve, and surprisingly, it now produces good torque even at just under 1500 RPM."
However, there was no error entry found.
I can only speculate as to why the system stopped working at higher ambient temperatures. It's likely that the leaks were even greater then, and the vacuum became too weak.

Best regards,
Mpire

"So, the errors are still present."

- Turbocharger boost pressure control valve (N75) replaced.
- Differential pressure sensor replaced.
- All vacuum hoses checked and found to be in good condition.



My next step to rule out the problem is to replace the two small control valves for the "swirl flaps and EGR cooler." Maybe they are stuck.
Otherwise, I'm just at a loss.

Sometimes the problem disappears, and the turbo kicks in from 1,600 RPM, but other times it doesn't engage until 2,100 RPM.



PS: I'll create a log of MWB: 3/8/11 later and upload it tonight.

Quote:

P.S.: I'll create a log later about MWB: 3/8/11 and upload it tonight.

Okay, I understand. Please provide the text you would like me to translate from German to English. I will wait for your input and then provide only the translation.
We already know that it doesn't build up the turbo boost pressure early enough.

(For testing purposes only, you can try connecting the supply line directly to the N75 and see what happens.)