Which injector pump unit is used in the 1.9 TDI AVF engine?

Hello,

I'm new to this forum.
I drive a VW Passat 3bg 1.9 TDI with an AVF engine.
I wanted to have my injector nozzles checked because of a loss of power.

While disassembling, I noticed that different injector nozzles were installed.
Three units with part number 036 130 073 AR, and one unit with part number 038 130 073 AL.

My question is, which fuel injector should be used in the engine?
Or are they the same, and only differ in their part number?

Best regards,
Dominik.

According to a list I have access to, both are suitable for your engine.

I assume that the "036" at the beginning of the first part number is a typo and should be "038". Correct?

According to information from the VW spare parts catalog, the suffix "AL" is used for AVF engines with chassis numbers up to 3B-2-290300. This part number is still available. Alternatively, the replacement part with the suffix 079BX is installed in these engines.
The AR suffix (or its current successor, 073BA or 079FX) applies to AVF engines based on the specified vehicle identification number.

Based on the vague information, it appears that something also changed in the control unit at the same time.

Based on the indications, this suggests to me that a mixed planting scheme is less suitable. I cannot determine whether Rüdis Infos or the spare parts program provides better information.

guste100 wrote:

I assume that the "036" at the beginning of the first part number is a typo and should be "038". Correct? According to information from the VW spare parts catalog, the suffix "AL" is used for AVF engines with chassis numbers up to 3B-2-290300. This part number is still available. Alternatively, the replacement part with the suffix 079BX is installed in these engines. The AR suffix (or its current successor, 073BA or 079FX) applies to AVF engines based on the specified vehicle identification number. Based on the vague information, it appears that something also changed in the control unit at the same time. Based on the indications, this suggests to me that a mixed planting scheme is less suitable. I cannot determine whether Rüdis Infos or the spare parts program provides better information.

Yes, that was a typo on my part.

Okay, thanks. That might also be the cause of the problem.
Can a faulty pressure sensor (PD) also negatively affect the idle speed control of the other cylinders?

Perhaps someone can check the numbers to determine if they refer to 520 or 550 series PDEs. Make sure that different sizes haven't been installed.

Dear Sirs,

guste100 wrote:

Based on the vague information, it appears that something also changed in the control unit at the same time. The indications, to me, suggest that it is more likely against a mixed construction.

That's correct. And with the change introduced by the aforementioned Fhgst number on the MSG, a different generation of PDE (pump-injector) was also installed in the Passat AVF engine.
1.1 instead of 1.3. They are not electrically compatible. Engines with a mixed setup usually run unevenly. The different injector sizes make things even more difficult. The AVF engines with 1.1 injectors received 520 injectors. The older models had 550 injectors.

AL Nozzle = PDE-P1.3/80/550 S 39
AR Nozzle = PDE-P1.1/80/520 S 216

dome196 wrote:

Can a faulty PD (Pre-Delivery) bottle also negatively affect the smoothness of operation of the other cylinders?

wrong, not bottle, next typo . Answer in that case: Yes, of course.

dome196 wrote:

My question is, which fuel injector should be used in the engine?

Please send the Fhgst number.

Steffen W wrote:

Dear Sirs, guste100 wrote: Based on the vague information, it appears that something also changed in the control unit at the same time. The indications, to me, suggest that it is more likely against a mixed construction. That's correct. And with the change introduced by the aforementioned Fhgst number on the MSG, a different generation of PDE (pump-injector) was also installed in the Passat AVF engine. 1.1 instead of 1.3. They are not electrically compatible. Engines with a mixed setup usually run unevenly. The different injector sizes make things even more difficult. The AVF engines with 1.1 injectors received 520 injectors. The older models had 550 injectors. AL Nozzle = PDE-P1.3/80/550 S 39 AR Nozzle = PDE-P1.1/80/520 S 216 dome196 wrote: Can a faulty PD (Pre-Delivery) bottle also negatively affect the smoothness of operation of the other cylinders? wrong, not bottle, next typo . Answer in that case: Yes, of course. dome196 wrote: My question is, which fuel injector should be used in the engine? Send the Fhgst number

.

Thanks in advance for your help.

Fhgst Number: WVWZZZ3BZ2E266722

Perhaps I should just try replacing the fuel pump and see how it runs then.
Here's another question about setting up the PD elements: Should they be set to 180 degrees or 225 degrees?

Turn the motor until the camshaft reaches its lowest point for the respective valve event. Then, turn the lifter until it hits its limit, and then turn it back 180 degrees. Finally, tighten the nut with a torque of 30 Nm.

(off topic: It doesn't really matter whether it's 225° or 180°. The important thing is that the same value is used for all four. But we will strictly adhere to the guidelines, and that would be 180°.)
225° was only mentioned in the very first AJM guides for powder metallurgy (PDE). And even that value was changed to 180°C in later editions.

You need the injector 038 130 079 BX, also known as a Bosch injector.
0 986 441 557, also PDE-P1.3/80/550 S 39. There are 4 identical ones.
Assuming that the original engine control unit (ECU) that is compatible with the Fhgst number is still installed in the vehicle.
Don't buy used scrap if you don't want to have to do this repeatedly, and don't overtighten the screw on the clamping lever. Also, don't reuse stretch bolts!
Good luck!

dome196 wrote:

Perhaps I should just try replacing the fuel pump and see how it runs then.

Yes, I would agree with that. Leave them in if they are not causing any problems.
Firstly, due to the costs, and secondly, to avoid a pointless operation on the aforementioned 6-mm thread in the cylinder head.

My source doesn't mention different VINs, and I have a more precise source, but I haven't had time to consult it yet.

Is the loss of power related to an uneven engine running?

If not, then I would exclude the PDs (presumably referring to "process diagrams" or a similar term) from the troubleshooting process.

Rüdi wrote:

My source doesn't mention different VINs; I have a more precise source, but I haven't had the time to consult it yet.

The person who installed the wrong injectors probably did it the same way.
Parts catalog, see attachment.

Rüdi wrote:

If not, then I would leave the PDs out of the troubleshooting process

.
He has injectors installed that are incompatible with his engine control unit. And we're going to ignore that for now and look for a solution somewhere else?

Thank you in advance for your help.

That probably means I need three new PD elements.
I initially thought only one was wrong, but now it's turning out to be more expensive than I anticipated.

To make sure I order the correct part and don't make any mistakes, I need the PD (presumably a part) with the part number 038 130 079 BX?

I can leave the PD 038 130 073 AL installed, or do all the PD units need to have the same part number?

This control unit is installed:
Part number: 038 906 019 GT.
Component: 1.9L R4 EDC G000SG 1523
Encoding: 00002
Operating number: WSC 05314

I want to be absolutely sure which PD components belong to the engine. It all costs a lot of money again.
I just don't want to end up installing the wrong ones.

Okay, so, I didn't use an aftermarket program this time, but one where you can enter vehicle identification numbers (VINs). However, I'd like someone else to take a look at it. That won't be possible until Monday, and I hope there's still enough time. Because there's something curious about it. I'll show you.

Search results:

-The engine control unit with the GT suffix is definitely compatible with that car.

At this point in time, my opinion on PDEs is:

You need the AL nozzles, or as a replacement part, the 079BX. The correct Bosch part number is 0 986 441 557. (PDE-P1.3/80/550 S 39).

Because: Models Fhgst No. 2-290300 and later use these parts. This is stated in all catalogs. You have model 2-266722, which is an earlier model. Hopefully that's clear.

What's unclear are the part numbers of the corresponding (compatible) engine control units that are listed in the program after the injectors. The GT model is not included. And that's always the issue with the AVF engine: the compatibility of the engine control unit with either 1.1 or 1.3 injectors. That's why I'd like someone else to double-check this for safety. I would have attached a Screenshot, but I'm not sure about the copyright implications, so I'm leaving it out.

Why are there actually different nozzles installed? Did you buy the Passat like that?

I bought the car like that.
I knew he was performing poorly.
That's why I was able to get it for a good price.
The previous owner just mentioned that they had the head gasket replaced.
He didn't mention that he was having problems with the PD elements.
He must have noticed that the Passat ran worse after the PD elements were replaced.
I was already thinking that, in the worst-case scenario, it might be the PD elements.
Whatever happens now, I was expecting it.


I also find it strange.
I'm definitely going to install the correct PDs now.
I'd rather wait a few more days.
Until it's definitively determined what goes into the engine.

Brief update:
I called earlier because I wanted to finish the story. Unfortunately, it was without result so far. It's as described above, and it can't be definitively identified using the available catalogs.
We have opened a service ticket with VW regarding this issue and we need to wait for their response. I'm sorry that I don't have anything better for you at the moment. I will let you know as soon as I have any new information.