Clean DPF: Full Diesel Particulate Filter?

Hello,

beim Vertraut machen mit diesem Forum bin ich auch die DPF Thread`s gestoßen. Die Ermittlung der Aschemenge in unserem Passat beträgt 65g. Der Ruß wird jetzt wohl oft verbrannt. Beim Loggen gestern lag der Wert bei 3 bis 4% und wurde heute schon wieder verbrannt. FaCycling distance: 100 km.

I still have some questions about how to obtain the spare parts.

In our P car, the engine was replaced in 2010. Where can I find the current engine code on the engine block? On all the places I've checked so far, it still says "BMP." The turbocharger and exhaust system are still from 2005.

After cleaning the DPF (Diesel Particulate Filter), the differential pressure sensor should also be replaced.
Is the current spare part number 076906051A?
Is the login code for customization displayed by VCDS?
After cleaning and adjusting the ash content, is only the new ash value entered?

Thank you for your help.

Hello,

Quote:

After cleaning the DPF, the differential pressure sensor should also be replaced.

Since the differential pressure sensor is not actually related to the removal of the diesel particulate filter, a preliminary replacement is quite pointless. After all, it can always be replaced with very little effort if it is defective.
At the very least, it should have lasted a long time based on the mileage shown in the car's scan data.

See also:
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.
/viewtopic.php?t=26437&highlight=dpf
/viewtopic.php?t=23802&highlight=differential pressure sensor failure

That would be more interesting.

Quote:

1 error found: 000564 - Charge pressure control. P0234 - 000 - Limit exceeded - Intermittent. Environmental conditions: Error status: 00110000 Error priority: 1. Error frequency: 1. Mileage: 221766 km Time: 0. Date: 2012.12.22 Time: 10:54:34

Driven without a DPF?

Best regards, Rainer.

Hello Rainer,

Quote:

Driven without a DPF?

No, never; I actually want to start working on the DPF now. I only came across this issue because of your website. The P system hasn't shown any error messages yet. And even though the part was last checked in November at the , there was no indication from there either.

Wo sind am Motorblock die Kennbuchstaben zu finden? Die anderen Stellen helfen mir nicht weiter. See also above.

Best regards,
Jens

Hello,

Your engine code is BMP, which can also be found on the sticker in your service booklet.

Best regards, Rainer.

Hello Rainer,

"However, the engine was replaced in 2010 because the drive gear of the oil pump was worn out. The workshop said that the new engine has a different oil pump design... meaning it doesn't have balance shafts?!"

Is that still the BMP engine?

Best regards,
Jens

Hello,

The balance shaft modules have been modified multiple times, even though the engine code remained the same.

Best regards, Rainer.

Hello Rainer,

Thank you for the answers; I learned a lot again.

Best regards,
Jens

Hello,

The DPF is now empty and back under the car. The removal and installation took 2 days, mainly because we had to keep getting different tools.
I was once again grateful for a fully stocked toolbox!

I followed your instructions.

"Expansion of the DPF (Diesel Particulate Filter) for the Passat 3C with BMP engine." Great.

Here are the notes I have:

Without removing the AGR valve, nothing can be done. I disconnected the "exhaust gas outlet" from above using a 10mm open-end wrench with an adapter for a 40mm Torx bit.
If the AGR valve has been removed, the top surface of the DPF is directly underneath it.
and thus the first temperature sensor (SW17), the oxygen sensor (SW22), and the first connection for the piping of the differential pressure sensor (SW17).

Up top, everything was done with adjustable wrenches, but down below, a proper open-end wrench (slightly bent) had to be used on the differential pressure sensor connection, and the whole thing was heated up with a torch. The open-end wrench can only be fitted after the PDF has been partially unscrewed.

I detached the driveshaft from the transmission using a multi-tooth wrench (M10), which made it much easier.

To flush it, I sealed the end of the tube with a spray nozzle cap and the lower pressure connection with the original pipe and tape. Then, I attached a 3/4" hose and clamp to the temperature port and started the water flow.

Then, for the first time, I modified data in the engine control unit.
In channel 12 of the adaptation settings, the ash value was set to 4g.

Now I am observing when the regeneration process will be initiated again.

Best regards,
Jens

Hello elyias1,

You could have saved yourself the trouble of expanding the AGR system for "next time." Simply rotate the clamp on the turbocharger so that you can access it from below with a 40mm Torx wrench. It's likely that the clamp on your Passat was twisted in an unfavorable position. However, you still need two extensions from below, but is then not a problem.
On the right side, during the second assembly/disassembly, I had propped up the passive component to keep the drive shaft out of the way.

"For my car, the flushing obviously didn't work. About six months later, I got a DPF from a salvaged vehicle with only 40,000 km on it at a good price – it's now installed, and I can relax for a while."
The main difference from the "old" one is that this one smells less and rarely regenerates. The state of charge increases very slowly (1.8% after 180 km). With the old one, after approximately the same distance, the state of charge was already between 10-20%.

I've also learned that even an old, heavily clogged Diesel Particulate Filter (DPF) can still be sold for around €150 to a scrap metal dealer. Apparently, the precious metals (platinum?) contained in the catalytic converter are even more valuable.

Hopefully, you'll have more luck with that washed material!
Regards,
Roland.