BMW's New HPFP

rmdvrs · 04-23-2010, 11:48 AM

My car just had its fuel pump replaced and while I was picking up my car I got to chatting with one of the SA's I know pretty well. He stopped the Service manager who helped me lemon my first car due to fuel pump issues and we started chatting and he told me that they just got word of a new pump. I asked him what the difference was between this one and the one that supposedly replaced the 881 pump (4943 pump) and he said this is the one that is supposedly gona be the final fix. He said they found like 6 or 7 internal problems with the HPFP. I asked him if they had a part number and he said they hadn't gotten one yet but that yesterday was when they were supposed to officially start getting them in. I said if I had known that I would have tried to wait for the new one and he said don't worry you'll definitely be back at least one more time for a pump. So be on the look out for this new pump. Lets hope this really is the final fix cause at this point these fuel pump issues are beyond ridiculous.

Hyper psi-atic · 04-23-2010, 12:00 PM

Quote:

Originally Posted by rmdvrs

(4943 pump) and he said this is the one that is supposedly gona be the final fix. .

$20 that says its gonna be another 4943"a" model # again ! haha I lost HPFP faith 2 pumps ago.

enrita · 04-23-2010, 12:44 PM

yep new bosch pump and software upgrade that as soon as you unlock the car starts the main tank fuel pump to put the fueling system in pressure.

rmdvrs · 04-23-2010, 12:45 PM

Yeah exactly. I'll believe it when I see it.

TriniJots · 04-23-2010, 01:57 PM

Ill be on the look out for this pump. Now they just have to figure out the spark plug, fuel injector and coil problems hahaha
I still love my car amongst all these problems though

ultimateendz · 04-23-2010, 02:06 PM

Quote:

Originally Posted by TriniJots

Ill be on the look out for this pump. Now they just have to figure out the spark plug, fuel injector and coil problems hahaha
I still love my car amongst all these problems though

service tech said he saw it on his comp for june availability fyi...

TriniJots · 04-23-2010, 02:16 PM

Quote:

Originally Posted by ultimateendz

service tech said he saw it on his comp for june availability fyi...

I am going to ask my dealer when I go in to pick up my car on Monday (all 6 fuel injectors changed) I really hope you are right and this is the fix. Thanks for the heads up

vasillalov · 04-23-2010, 03:26 PM

In all fairness, I can't believe the idiot engineers in BMW did not think of pre-priming the fuel system on the get go. Every other fuel injected car does that! Its the only way you can get any fuel to go through the damn fuel injectors.

I am seriously beginning to think that BOSCH outsourced the programming of the ECU to India or Pakistan. The vast majority of software programmers/engineers/architects from Asia have absolutely no idea what are they doing...

WilliamE92 · 04-23-2010, 03:50 PM

BMW fix the HPFP?

LOLOL

TurboSid · 04-23-2010, 03:53 PM

just ordered a hpfp yesterday lol... we'll see if this new pump will actually fix anything. my lease will be up soon enough

shifterboy45 · 04-23-2010, 03:59 PM

Quote:

Originally Posted by enrita

yep new bosch pump and software upgrade that as soon as you unlock the car starts the main tank fuel pump to put the fueling system in pressure.

the 943 pump is actually manufacturered by Continetal

bulldog_yyc · 04-24-2010, 12:12 AM

Quote:

Originally Posted by TrackRat

BMW has been using the electric pump to pressurize the HPFP from day one. This isn't something new, they are just running the electric pump longer to compensate for the failing HPFP that doesn't HOLD fuel pressure properly for long periods and doesn't generate the proper pressure fast enough on start-up after losing some pressure.

The HPFP issues have existed with every version of the N54 HPFP produced by Siemens, Bosch and now Continental/Siemens so I highly doubt it is a production issue and more like a design / operational issue. If it was a QC issue on the N54 HPFPs these vendors would be paying the warranty costs and they'd have been out of business years ago.

+1

Ironring Racing · 04-26-2010, 12:25 PM

I had the 943 installed about a month ago, and one difference I noticed was that it (very loudly) comes on when I unlock/open the door. I'm only assuming its the HPFP priming, but with the software update I wasn't sure if it was that or something else.

So after using the Continental as a replacement for only a couple months they're going back to Bosch?

Have there been a bunch of reports of the Cont unit failing too?

shifterboy45 · 04-26-2010, 12:49 PM

as stated before, bmw has always had a 3 sec prime on the systems back to the K/L-jetronic system (early fuel injection systems)

its more noticeable because they extended it and make sure the line pressure is up...

but there is more to the software that just that, there are new test routines in the code, supposedly to help with "future" HDP problems.

wish this was a easy as a "smooth running" test for the M60 engines that died with all the sulfur in the fuel during the mid '90s .. but its not

Kerosene Hat · 04-26-2010, 01:59 PM

Quote:

Originally Posted by TrackRat

The HPFP issues have existed with every version of the N54 HPFP produced by Siemens, Bosch and now Continental/Siemens so I highly doubt it is a production issue and more like a design / operational issue. If it was a QC issue on the N54 HPFPs these vendors would be paying the warranty costs and they'd have been out of business years ago.

Probably a design engineering issue on BMW's side, BUT - Siemens / Conty / Bosch are not going out of business even if they had to replace every single HPFP on their own dime.

Supermoto_SD · 04-26-2010, 04:51 PM

For what its worth, I just got a HPFP put in last week (car only has 1200 miles on it

) my SA claimed i got the new HPFP and mapping. When I unlock my car you can here the system priming.

Slidewayz · 04-26-2010, 05:10 PM

Quote:

Originally Posted by vasillalov

In all fairness, I can't believe the idiot engineers in BMW did not think of pre-priming the fuel system on the get go. Every other fuel injected car does that! Its the only way you can get any fuel to go through the damn fuel injectors.

I am seriously beginning to think that BOSCH outsourced the programming of the ECU to India or Pakistan. The vast majority of software programmers/engineers/architects from Asia have absolutely no idea what are they doing...

I've seen some mighty good work product from Asian software developers, mate.

I've also seen total crap from developers right here in the U S of A.

vasillalov · 04-26-2010, 05:39 PM

Quote:

Originally Posted by Supermoto_SD

When I unlock my car you can here the system priming.

See, that's my point... Mine does not do that and I have the original software that came from the factory.

OpenFlash · 04-26-2010, 05:55 PM

Quote:

Originally Posted by vasillalov

I am seriously beginning to think that BOSCH outsourced the programming of the ECU to India or Pakistan. The vast majority of software programmers/engineers/architects from Asia have absolutely no idea what are they doing...

I take offense to that

AltecBX · 04-26-2010, 05:56 PM

To Funny

aah78 · 04-27-2010, 03:56 PM

Quote:

Originally Posted by vasillalov

I am seriously beginning to think that BOSCH outsourced the programming of the ECU to India or Pakistan. The vast majority of software programmers/engineers/architects from Asia have absolutely no idea what are they doing..

Quote:

Originally Posted by shiv@vishnu

I take offense to that

.

So do I.
What ignorance!

shifterboy45 · 04-27-2010, 04:19 PM

Quote:

Originally Posted by vasillalov

See, that's my point... Mine does not do that and I have the original software that came from the factory.

you car does do it, you just cant hear it. when you insert the key into the CAS the fuel pump relay is energized, primary pump runs and then stops, til you hit the start button.

they have inserted code to trigger the relay earlier and a longer time duration to the primary pump. instead of the typical 1-3 seconds runtime before the starter is engaged....

04-23-2010, 11:48 AM	#1
rmdvrs Second Lieutenant 13 Rep 202 Posts Drives: 2008 335i coupe Join Date: May 2008 Location: Los Angeles iTrader: (0)	BMW's New HPFP My car just had its fuel pump replaced and while I was picking up my car I got to chatting with one of the SA's I know pretty well. He stopped the Service manager who helped me lemon my first car due to fuel pump issues and we started chatting and he told me that they just got word of a new pump. I asked him what the difference was between this one and the one that supposedly replaced the 881 pump (4943 pump) and he said this is the one that is supposedly gona be the final fix. He said they found like 6 or 7 internal problems with the HPFP. I asked him if they had a part number and he said they hadn't gotten one yet but that yesterday was when they were supposed to officially start getting them in. I said if I had known that I would have tried to wait for the new one and he said don't worry you'll definitely be back at least one more time for a pump. So be on the look out for this new pump. Lets hope this really is the final fix cause at this point these fuel pump issues are beyond ridiculous.
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04-23-2010, 12:44 PM	#3
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	yep new bosch pump and software upgrade that as soon as you unlock the car starts the main tank fuel pump to put the fueling system in pressure. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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04-23-2010, 12:45 PM	#4
rmdvrs Second Lieutenant 13 Rep 202 Posts Drives: 2008 335i coupe Join Date: May 2008 Location: Los Angeles iTrader: (0)	Yeah exactly. I'll believe it when I see it.
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04-23-2010, 01:57 PM	#5
TriniJots Driver 102 Rep 659 Posts Drives: 2021 M340i Join Date: Feb 2010 Location: South Florida iTrader: (3)	Ill be on the look out for this pump. Now they just have to figure out the spark plug, fuel injector and coil problems hahaha I still love my car amongst all these problems though
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04-23-2010, 03:26 PM	#8
vasillalov Mad Linux Guru On The Loose 1131 Rep 5,404 Posts Drives: 2008 335i Sedan, 2023 M3 Join Date: Aug 2009 Location: Chicago, IL iTrader: (5) Garage List 2023 BMW M3 [0.00] 2008 335i E90 [8.00]	In all fairness, I can't believe the idiot engineers in BMW did not think of pre-priming the fuel system on the get go. Every other fuel injected car does that! Its the only way you can get any fuel to go through the damn fuel injectors. I am seriously beginning to think that BOSCH outsourced the programming of the ECU to India or Pakistan. The vast majority of software programmers/engineers/architects from Asia have absolutely no idea what are they doing...
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04-23-2010, 03:50 PM	#9
WilliamE92 First Lieutenant 21 Rep 318 Posts Drives: 2013 EB F30 335 MT Join Date: Aug 2009 Location: CA iTrader: (1)	BMW fix the HPFP? LOLOL
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04-23-2010, 03:53 PM	#10
TurboSid Brigadier General 1114 Rep 3,261 Posts Drives: 2022 M4Cx BSM/FR Join Date: Apr 2008 Location: Florida iTrader: (4) Garage List 2008 335i [0.00]	just ordered a hpfp yesterday lol... we'll see if this new pump will actually fix anything. my lease will be up soon enough __________________ 2022 BSM/FR M4 Competition X-Drive 2017 MW/SO M4 ZCP [SOLD] • 2015 MW/SO M4 M-DCT FBO [SOLD] • 2011 AW/CR 335is DCT FBO [SOLD] • 2008 AW/CR 335i 6MT FBO [SOLD]
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04-26-2010, 12:25 PM	#13
Ironring Racing N54 FTW! 25 Rep 389 Posts Drives: BMW 335i 6MT Join Date: Aug 2008 Location: Calgary, Canada iTrader: (3)	I had the 943 installed about a month ago, and one difference I noticed was that it (very loudly) comes on when I unlock/open the door. I'm only assuming its the HPFP priming, but with the software update I wasn't sure if it was that or something else. So after using the Continental as a replacement for only a couple months they're going back to Bosch? Have there been a bunch of reports of the Cont unit failing too?
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04-26-2010, 12:49 PM	#14
shifterboy45 Major 23 Rep 1,179 Posts Drives: 2009 335i Coupe Join Date: Feb 2009 Location: North by Northwest iTrader: (0)	as stated before, bmw has always had a 3 sec prime on the systems back to the K/L-jetronic system (early fuel injection systems) its more noticeable because they extended it and make sure the line pressure is up... but there is more to the software that just that, there are new test routines in the code, supposedly to help with "future" HDP problems. wish this was a easy as a "smooth running" test for the M60 engines that died with all the sulfur in the fuel during the mid '90s .. but its not
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04-26-2010, 04:51 PM	#16
Supermoto_SD Private 4 Rep 68 Posts Drives: 2010 335i LCI M-Sport, Le Mans Join Date: Mar 2010 Location: San Diego iTrader: (2)	For what its worth, I just got a HPFP put in last week (car only has 1200 miles on it ) my SA claimed i got the new HPFP and mapping. When I unlock my car you can here the system priming.
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04-26-2010, 05:56 PM	#20
AltecBX Colonel 325 Rep 2,663 Posts Drives: BMW 335xi Sedan; BMW M3 ZCP Join Date: Nov 2007 Location: NYC iTrader: (0) Garage List 2018 BMW M3 ZCP [0.00] 2007 BMW 335Xi [0.00]	To Funny __________________ 335xi Sedan 6AT \| Weather(70-85°F) \| N54 Tune Comparison Chart \|\| N54 Turbo Upgrade Comparison Chart -PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Aggressive maps) †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 \| 0-60 in 4.0sec \|\| †Cobb E30 LT (35% Ethanol/65% 93 Octane) \| 0-60 in 3.9sec AR Design Catless DP \| BMS DCI + OCC \| ETS 5 FMIC \| Alpina B3 Trans Flash \|235/265 19" Michelin PSS
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