AVF Motor Strömungsgeräusche bis ca 2000 U/Min | Posts 16+

corryfan wrote:

@ulf: Increasing the RPM at the "default setting" works! What exactly is happening there?

Everything is in the link I mentioned above -> in the section "In this process, the VTG operates approximately every 10 seconds..."

Quote:

It doesn't quite fit the topic, but does anyone know what "status 2 or 4 or 6" means for the PD elements?

"This issue was recently addressed -> Search function."

Regarding the noises. (Passat AVF)
It could also be related to the air intake system or the air filter housing.

a) Carefully inspect the attachment of the intake pipe to the connector on the air filter housing.
Possibly a replacement part.
b) Optimized air filter lower housing: 3B0 129 614

c) Adjust the motor/transmission mounts, precisely align the torque support, and correctly position the exhaust system. (This is particularly important when experiencing low-frequency rumbling or booming noises between 1800-2550 RPM under partial load.)

Optimized sealing rings: (list)

OLD > New

1J0 145 117 J/K >> 3C0 145 117
6X0 145 117 >> 3C0 145 117 B
070 145 117 A >> 3C0 145 117 B
6Q0 145 117 / A >> 3C0 145 117 D
1J0 145 117 L/M >> 3C0145 117 F
1J0 145 117 N/P >> 3C0 145 117 H
7L6 145 117 >> 3C0 145 117 K

The PDE status should always be the same (and not deviate from 0) on all 4 units when they are idle.

018,0, Status: Solenoid valves for pump/nozzle (BIP).
; 000 - Error-free regulation.
; 002 - Control during startup
; 004 - Small injection volume or MV off.
; 008 - Maximum current reached.
; 016 - GDP outside of standard reporting period.
; 032 - Sampling rate too low.
; 064 - Transformation error.
; 128 - GDP calculation not possible.

Hello!
Regarding b), since when has this replacement part been available under this part number? Is there any written documentation about it? Is this only the lower section of the air filter housing? Does this fit the old air intake elbow?

'Regarding the torque support for the gearbox (Passat AVF): Where is it located, and how do you adjust it?' Is there a REP guideline available?

Here's the translation:

Another quick question about the Passat (AVF). What are the following parts used for?
8D0 129 636B Sealing strip.
3B0 198 614 - Retrofit kit for air filter.
Are these things that were introduced later in the series? Mine are definitely defective. NO!

I want to get to the bottom of the vibrations in my AVF (6-speed) engine. They've always been there, and haven't improved or worsened despite three replacements of the dual-mass flywheel, two replacements of the exhaust manifold (including the catalytic converter), and one replacement of the rear silencer. The vibrations are pervasive and feel like holding a vibrating phone. However, they only occur between 1600 and 1900 RPM. You can feel them in the steering wheel, the seat, and especially the gear stick. It doesn't matter if you're driving at full throttle or slowly increasing the RPMs. In that range, it vibrates like a phone. Is this normal for a 3BG pump-injector system?

Thank you.

Greetings.

hello everyone,

Okay, so it seems my system is tight, at least as far as the following connections are concerned (I checked them by hand while the engine was running at a slightly higher speed, hopefully that's enough).
- Hose, upper left, in front of the loader.
- Plastic tubing connecting to the low-loss cable (LLC), and the plastic tubing itself.
- Connect the hose from the low-level coolant sensor to the steel pipe at the bottom.
- Connect the hose from the loader to the steel pipe at the bottom.

Why does everything always have to break? The car is practically new!
Perhaps the noises are actually 'normal,' but does anyone else experience this in their Passat?

@vagtuning:

a) Carefully inspect the attachment of the intake pipe to the connector on the air filter housing.
Possibly a replacement part.

What exactly do you mean by 'locking mechanism'? The connection between the Schlau (hose) and the Lufikasten (air box) is secured with clamps in my setup.

@96kwTDI:
At work, I sometimes drive V8 4.2 TDI engines in A8L models. Okay, it doesn't vibrate as much as ours. But I have to say, the AVF engine in the Passat doesn't have that either! So what you're describing sounds like noticeable vibrations, which I haven't experienced. 'When the car is stationary and in gear (with the TT5 transmission), it vibrates a bit too much for my liking (the headlight flickers up and down like in a truck), but it's not really bothersome.'

Do you at least also have my tinnitus ?

Hi!
'These are not vibrations in the usual sense; it's more of a subtle tingling, like a mobile phone with a vibration alert. The PDs vibrate quite intensely anyway. This is due to the lengthwise installation of the motor and PD.' For example, in golf, the PDs are MUCH calmer!

Flow noises? Just the turbo whistle when it kicks in like a cheetah . If you stop hearing that, THEN I would be seriously worried .

Greetings.

I'm referring to parts 3, 20, and 20a... also, the attachment of part 3 to the air filter housing. That's why the lower part was also replaced, because that connection was causing problems.

Hello corryfan,

"I also experience the flow noise in my A4, but it's noticeable from around 1500 RPM (only when the radio is off and the ventilation is on a low setting). It's most noticeable when driving uphill at full throttle, as the engine can only rev up slowly." It becomes quieter as the speed increases, and at 2500 RPM, it is drowned out by other noises.
The car has approximately 78,000 kilometers on the odometer.

Best regards, Karsten.

@vagtuning
And can you please also tell me WHEN this change occurred and whether it falls under the chapter 'Technical Troubleshooting'? If so, then there must be documentation or a processing number or something related to it. I need something concrete so that I can again. Simply saying 'there's something new' without giving any indication of the problem doesn't come across very well.

Thank you.

Greetings.

There is definitely a TPL (Third Party Logistics provider) available, and your dealer should be able to find one for you.

Hi!
And approximately when was that, and what is the name of the TPL? Is that a secret, or don't you know?

Greetings.

Hello everyone.

The story about the air filter box and the intake manifold is a well-known issue. should please take a look at the HST. The noises caused by this typically occur at a speed of around 1500 revolutions per minute.

Furthermore, there are still some minor issues with the engine mounts at VW/Audi. In such cases, it is advisable to first loosen the engine mounts and allow the engine to "settle" without any stress . Statement from a VW technical service technician.

Regarding the flow noises, they are to a certain extent quite normal. However, you could and inquire whether the turbocharger could still be reconditioned within the warranty period, citing the reason of increased oil consumption.
If he thinks about customer satisfaction and his sales, he will do it.

Best regards,
Matte.

I looked into the topic of 'Hutze' today. So, I couldn't find anything there.
What can you see on these parts?
Part 3 on part 14 is covered with sealant on my vehicle; is this also an optimization introduced from a certain production year? I think that quite a bit has already been incorporated since the beginning of 2004.

at KarstenH:
I'm glad to know that I'm not the only one experiencing these noises. 'Starting from 1500 RPM might be suitable, while in my case, it goes up to around 2500-3000 RPM.'


What is a 'HST'? Elsa?

Hi!
Could you please take a picture of that? Or, which part of the drawing is that supposed to be? Is it sealant? Sounds adventurous .

Greetings.

Hi.
Part 3 features a kind of 'concealed' attachment mechanism for the filter cassettes (14).
There's a rubbery, slightly sticky sealant inside/between the two parts. I'm not sure if this is how it comes from the factory, or if my predecessor already worked on it.

'Hst' stands for 'Handbuch Service Technik,' which translates to 'Service Technology Manual.'
A technical solution for the general topic exists, but not specifically for my type of sealant. The solution relates to modified filter housings. The TPL (presumably referring to a specific technology or product) would likely be relatively 'new,' perhaps dating back to around 2002/2003.

My noises are still there, and nothing has changed about that so far. I'm slowly starting to believe that this is normal .