Has your HPFP been replaced?

[SlowSedans]

Trying to get a feel for how many people have had to replace their high pressure fuel pump. Or have one currently failing or failed and are waiting on warranty or parts to come off dealer lock.

I have currently, personally assisted with diagnosis of 6, 2 in the last week. 2 unrepaired at this time.

Additionally if you had an issue, were you running e85 or blends?

[Potatohead_RS3]

No

water pump though

[SlowSedans]

[ReallyNotHalvie]

Enough to where they weren't letting online retailers like ECS sell them a year or so back because they were stocking up for dealers to replace them. Not even sure anyone has figured out whether the HPFP is even causing that. I had that issue and it didn't go away after changing the HPFP. They built very stout cars :|

Are you Jared? They still have a lock on them, lol?

[PowerStroke]

nope

[SlowSedans]

Enough to where they weren't letting online retailers like ECS sell them a year or so back because they were stocking up for dealers to replace them. Not even sure anyone has figured out whether the HPFP is even causing that. I had that issue and it didn't go away after changing the HPFP. They built very stout cars :|

Are you Jared? They still have a lock on them, lol?

I am Jared VL, still a lock on parts, cant even buy them for customers without jumping through hoops.

The hpfp cured my old issue and so far seems to cure everyone's. Seeing that this is even happening on stock cars it has to be pretty widespread.

Did you even figure out your issue?

[ReallyNotHalvie]

I am Jared VL, still a lock on parts, cant even buy them for customers without jumping through hoops.

The hpfp cured my old issue and so far seems to cure everyone's. Seeing that this is even happening on stock cars it has to be pretty widespread.

Did you even figure out your issue?

Nah, I just blew the engine and have been having ongoing issues since :)

Seems like the injectors are another place to start looking if the hpfp doesn't solve some of your customer's issues. I replaces both the HPFP sensor and HPFP pump. I was able to get the pump by placing an order with Deutsche Autoparts. Might be worth a try contacting them.

And assuming the last option was just put there as a joke, but wouldn't suggest anyone keep driving the car hard if you're having those misfires.

I can't believe there is still a lock on it. I was going through this in 2017. They still haven't figured it out yet?...

[SlowSedans]

Apparently they havent figured this out at a corporate level at all. The last option on that Facebook poll was to poke fun at someone I know who did exactly that for 2 weeks, making me chase my tail revising him because he was sending bad logs and incomplete logs over and over and reporting back mixed info that I trusted... because he is an audi tech... lol.

I have had a customer with two bad DI injectors on a 17 and I actually think I'm developing a DI injector issue on 1 cyl myself.

[ReallyNotHalvie]

Apparently they havent figured this out at a corporate level at all. The last option on that Facebook poll was to poke fun at someone I know who did exactly that for 2 weeks, making me chase my tail revising him because he was sending bad logs and incomplete logs over and over and reporting back mixed info that I trusted... because he is an audi tech... lol.

I have had a customer with two bad DI injectors on a 17 and I actually think I'm developing a DI injector issue on 1 cyl myself.

I'm not a tech at all, but I would maybe look at the port injectors, too. Seen many people post that the issues could be with those injectors, and DI like you mentioned too, not being flow matched or having other issues.

[nicholasdaa]

I had a LPFP failure at 32k miles but no HP issues. OEM LPFP replacement fixed my issues right up.

[shivaswrath]

How can you tell?


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[SlowSedans]

You can log your pumps and other things. If your car is throwing a fuel low pressure code you should investigate it. If your car is cutting out under boost, investigate, log, etc.

Some people also have an issue with fuel levels below 1/4 thank and heavy acceleration. The two shouldn't be confused so always test with adequate fuel.

[whitewaterguy87]

You can log your pumps and other things. If your car is throwing a fuel low pressure code you should investigate it. If your car is cutting out under boost, investigate, log, etc.

Some people also have an issue with fuel levels below 1/4 thank and heavy acceleration. The two shouldn't be confused so always test with adequate fuel.

What do you think is the best device to log with? VACOM VCDS or something different? I have never logged a car but would like to start vs relying on shops!

[Audi9]

So, the four cars that you've diagnosed and repaired all had similar logs to that of post #3? Did the replacement of the HPFP fix their issues?

Also, what was the engine temp when you took that screenshot in post #3?

[SlowSedans]

Here is the same car, same fuel, same boost with a new Rev. D pump courtesy of the dealer today, the failing pump was a Rev. C unit. Car pulls like a monster again and no more misfires as you would expect.

Looking through notes, all failed or failing pumps have been Rev. C and off a 2017.

[PowerStroke]

Here is the same car, same fuel, same boost with a new Rev. D pump courtesy of the dealer today, the failing pump was a Rev. C unit. Car pulls like a monster again and no more misfires as you would expect.

Looking through notes, all failed or failing pumps have been Rev. C and off a 2017.

Is there a way to check which rev you have?

[SlowSedans]

How often did you and others notice symptoms? Would you notice this via datalogging on every WOT if you did have HPFP issues?

Yes, espeially when starting low in RPM and holding wot too redline, when it starts to fail you will notice issues, you can log issues way before you notice them.

Is there a way to check which rev you have?

You can see the part number on the top of the pump without even removing the engine cover, shine a flashlight down in there. Its laser etched and can be hard to make out.

[PowerStroke]

Yes, espeially when starting low in RPM and holding wot too redline, when it starts to fail you will notice issues, you can log issues way before you notice them.



You can see the part number on the top of the pump without even removing the engine cover, shine a flashlight down in there. Its laser etched and can be hard to make out.

thanks

[SlowSedans]

So, the four cars that you've diagnosed and repaired all had similar logs to that of post #3? Did the replacement of the HPFP fix their issues?

Also, what was the engine temp when you took that screenshot in post #3?

Similar or wavy instead of flat lined around 10. Yes on replacing pumps fixing the issues. Engine temps have all been normal, oil around 200 for pulls and fuel temp below 60c. Ambient 75f ish, sea level. Few different tuning firms, one stock. All mixing or using e85.

[old_spool]

My light came on at 120 miles on a 2019. Stock everything, 91 octane...still on the first tank. It was some hose which caused the Low pressure fuel system light to come on. The dealer replaced my pump with that hose.

[SlowSedans]

What do you think is the best device to log with? VACOM VCDS or something different? I have never logged a car but would like to start vs relying on shops!

The most practical and usable route for an owner is the ross tech VCDS, a genuine unit for a few vehicles is economical in the grand scheme of it for an audi. I will make a post soon on what to log. I believe I have posted other things to log in other threads about fuel and boost.

[SlowSedans]

To best log this, use vcds and find these values or similar on other software platforms. Idling in traffic seems to be the most common spot for the error tuned or untuned.

IDE00186
IDE00188
IDE00201
IDE00202
IDE00357
IDE00597
IDE00604
IDE01869
IDE04677

Fuel low pressure: actual value
Fuel high pressure: actual value
High fuel pressure: specified value
Low fuel pressure: specified value
Fuel temperature
Long term adaptation of mixture formation bank 1
Short term adaptation of mixture formation bank 1
Long-term fuel trim bank 1 at idle
O2 sensor 1 bank 1: O2 sensor actual value

If using VCDS and a HEX cable, use these setting for the fastest logging.

From a low pressure system error thread.

[purekoryo]

How often did you and others notice symptoms? Would you notice this via datalogging on every WOT if you did have HPFP issues?

From a low pressure system error thread.

[NardoRS3]

I’ve had the issue of engine oil smelling like gas, with three different dealers telling me it’s due to short trips and within acceptable range. I know some others had their fuel pumps replaced based on this, but I can’t seem to get them to do anything in my case... all documented, so hopefully if something blows up, it’ll be covered.


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[SlowSedans]

I’ve had the issue of engine oil smelling like gas, with three different dealers telling me it’s due to short trips and within acceptable range. I know some others had their fuel pumps replaced based on this, but I can’t seem to get them to do anything in my case... all documented, so hopefully if something blows up, it’ll be covered.


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How bad are we talking about from a smell saturation standpoint here? The factory file runs rich but not excessively, however if you do mostly drive your car very short distances it can influence saturation as there is major enrichment during warm up and more blow by.

[jl87]

Confirmed my Nov 2017 delivery has rev D pump, just for reference.

[BecksA3]

Resurrecting this thread as I have a fuel smell in the cabin while sitting and idling. I have a ‘16 A3 8V. I searched the posts before I joined with no luck. Now that I’m a member I’m hoping for better results.

I don’t get any codes or have drivability issues. Checked under the hood for signs of a leak, and the sniff test with no luck. Fuel level doesn’t seem to make a difference.

Search results are all over the place, so I’m hoping someone else has been down this road before me that can help.


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