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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > So I thought I was the lucky one, but....



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      06-30-2010, 12:03 AM   #1
newbieman78
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So I thought I was the lucky one, but....

I am NOT damn it.

I was on here yesterday browsing the forum like I always do, and I came across some new posts on HPFP failures....I remember thinking how fortunate I am that I have 35,000 miles on my car and no problems despite full bolt-ons and tune. I was actually going to post in a thread saying that I am doing just fine and have never had problems with my fuel pump, but I didn't because I didnt want to jinx myself.

Anyway, today I am driving to work and I was at a red light and when the light turned green I took off and WHAM.....the car just shook violently, I lost all boost, the check engine light came on and I went into limp mode with the half power light. I was like what the f*c*. Thought my forge DV hose came undone and I was leaking boost pressure but I pulled over, checked engine and no problem. Restarts did not fix anything.

So much for my luck and being an exception to this HPFP failure.

It was my day at work to do various rounds so I had to drive all day with no boost. Finally made it home. Car barely speeds up to 50 mph.

Connected mt BT tool at home and got the error codes for HPFP

29DC-cylinder injection switch-off
2FBF-fule pressure at injection release
****-something else with fuel pump (cant remember code)
30FF-exhaust fume turbocharger low side

Cleared all codes. Restarted car again, and got all the codes back except the 30FF. tried it several times and no more 30FF...wonder what that was all about. Car goes into LIMP mode as soon as you turn it on and this time car cranks for a few seconds before starting.


so now just spent an hour and removed my JB3 and O2 sensor from ECU compartment. still got Catless DPs, forge DV, DCI, corner light delete mod. I dont think any of these have anything to do with the HPFP failure but I hope they dont use these as an excuse to void my warranty and make me pay out of pocket. On top of all this I have a broken gasket cover and i am constantly leaking oil so will need that replaced and they will probably have to replace everything, not just the cover.


some questions for you guys who have gone through this before.

When i go to the dealer, should I mention that i think it is a HPFP failure (not mentioning my BT tool of course) or just let them figure it out and tell me? Do i ask specifically for the new and updated fuel pump or is that the standard these days? (i dont want them to replace it with the same model pump and not give me the upgraded version).

I know they WILL have to update my software, I am still pre v29 software.

Should I ask for anything else to be fixed or replaced like wastegates or whatever. I don't think i've had any problem with those. Like I said, i was lucky so far.

I was just about to take my car to private shop this week and install my AMS FMIC and new quad tips and diffuser and now this shit happens.

I think I am rambling on but I am just damn pissed.

thanx for listening
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      06-30-2010, 12:11 AM   #2
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How you're treated 100% depends on the tech, and your SA, and how chill/knowledgeable they are about mods. We all know here that NONE of your mods had ANYTHING to do with what happened, but they certainly like to make you think they did. My misfiring was blamed on, get this, my AFE intake and my oil catch can. Apparently crankcase ventilation systems cause misfiring problems "all the time" according to the BMW rep that saw my car...right...

Nothing to it but to do it though, so get the car into the dealer and get it back to running right! I have had 4 hpfp's replaced, and my brother's 2010 135i had one replaced at only 2000 miles, so we're pretty used to the inherent problems with the n54 in my family haha.
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      06-30-2010, 12:17 AM   #3
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sorry to hear man.. those catless dp's may be a problem tho because without the O2 sensor it's going to throw a SES light?.. I wouldn't mention to the SA that you think it's the HPFP.. if you mention wastegates they will most definitely update your software, you could tell them that you don't want any updates.. because the HPFP is a common problem you may be okay and they will replace no questions asked under warranty..
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      06-30-2010, 12:25 AM   #4
newbieman78
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Quote:
Originally Posted by dlbrooks18 View Post
you could tell them that you don't want any updates..
its my understanding that the upgraded fuel pump REQUIRES a software update to handle the new pump

So is it true that despite the NEW and BETTER fuel pumps, they are still failing left and right?

Anyone know what the latest version of the fuel pump is and WHEN it was last upgrated? i can search the forum more but i am just exhausted today already
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      06-30-2010, 12:27 AM   #5
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They're required to run an update before replacing any pumps now. The software has an integrated HPFP priming system using the in-tank pump. It actually has smoothed out my starts, but I haven't let my car sit for more than 24 hours yet this week (until today), so I will see if I have any problems tomorrow afternoon.
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      06-30-2010, 12:40 AM   #6
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sorry about all your pump failure problems. this is ridiculous. i cant believe even the upgraded pumps are failing. I will now be scared to drive on long trips incase the pump fails in the middle of nowhere.

Hey how long is your car at the dealership on average for repair of a fuel pump? i need to know how long to rent a car for
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      06-30-2010, 12:56 AM   #7
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Mine have typically been 1 to 2 days if I drop it off the night before/super early in the morning. Sometimes the dealership likes to keep it an extra day to cold start it and make sure the problem is gone. I assume they're pretty accustomed to replacing these pumps, so the job goes pretty quickly.
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      06-30-2010, 01:13 AM   #8
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Quote:
Originally Posted by newbieman78 View Post
its my understanding that the upgraded fuel pump REQUIRES a software update to handle the new pump

So is it true that despite the NEW and BETTER fuel pumps, they are still failing left and right?

Anyone know what the latest version of the fuel pump is and WHEN it was last upgrated? i can search the forum more but i am just exhausted today already
hmmm, since when? I had mine replaced a few months ago and no software updates, takes 4-6 hours in labor, so expect them to have your car for at least 1 day, it's possible the car could be dropped off early morning and ready by close of business if they get started on it in the am..
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      06-30-2010, 08:13 AM   #9
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I had my HPFP replaced around April/May and they did the software update, replaced both my LPFP and HPFP... I believe the most up to date SIB requires them to update software before replacing the HPFP... If the software update doesn't fix the problem, then they will replace the HPFP... Sucks, but that's how they do it now..
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      06-30-2010, 11:16 AM   #10
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Had mine done 3 times, all with AFE Intake installed - 1st time was before new 934 pump was available and that failed again fairly soon. 2nd time I got the new pump but the tech installed something incorrectly and it failed pretty quickly again. 3rd time it was done right, but since I've got a DME80, I'm not sure if they updated the software or not. Recently, I had a steering angle sensor intermittently sending "don't drive" warnings that would last for 10 minutes and then go out; had it checked and they decided to replace it, which required "reprogramming" the base BMW software. This was done along with re-loading my Dinan S2 and I noticed that I did in fact get a newer version of the DME80 software. Car runs great now. I've only got 24K miles on it (it's an '07 and I live close to work), so I'm hoping this lasts for awhile.
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      06-30-2010, 09:47 PM   #11
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well I dropped off the car this morning. Told the SA my symptoms and he was like ...'oh yeah, need to replace your pump, its very common for it to fail'. he didnt mention anything to me about having to update software. said it will be ready friday, so i guess we'll see what they did friday.

i didnt say anything about my mods or DP's. The SA looked cool enough to maybe not care. They do Dinan at this dealership so i think they may be somewhat mod friendly. No one called all day to tell me anything so either they didnt work on car yet and didnt notice DP's or they dont care. I am still a little nervous though
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      07-01-2010, 09:42 PM   #12
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update.

so I call my SA today to see how the repairs to the car are progressing, especially cause he told me it'll be ready tomorrow. He said that they haven't even started working on it. They found out that my software has never been updated so now they are supposedly waiting for an official permission from BMW HQ to be allowed to update my software.

Then, they have to drive my car around for a 100 miles or so to see if the problem comes back, which my SA said it will. Then they can finally replace the HPFP.

So now maybe I'll get my car by monday, but SA can't promise me anything, because it all depends on BMW HQ's TIMELY decision to update my software.

Fu**ing BMW man lol
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      07-01-2010, 10:50 PM   #13
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They have to drive your car 100 miles?
Is that standard procedure?

Doesn't sound right to me... but I haven't had a problem.
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      07-02-2010, 12:04 AM   #14
newbieman78
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well he said that sometimes after upgrading the software, the problem may appear to be fixed, but 99% of the time it will come back after a 100 to 200 miles of driving so then the pump will actually have to be replaced. However, BMW HQ won't authorize pump replacement if the software fix alone works. So he said they have to keep car and drive for 100 to 200 miles i guess to see if the software fix will fail. Who knows.

I think they have a special deal with the Enterprise rent-a-car across the street and they keep your car at the stealership longer so that way you have to rent car longer and they get a cut. Someone told me that. Don't know if its true.
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      07-02-2010, 01:10 AM   #15
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I don't like the idea of the dealer putting 100's of miles on my car...
They should let you put the miles on your own car. Then if/when the pump fails, you can bring it back in and have it replaced.

I dunno.. seems like that's how it should be done.
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