Less fuel pump failures

BzzzBom · 07-03-2007, 07:03 PM

Over the last month the number of posts regarding fuel pump failures has dramatically decreased. I have noticed this on at least three BMW forums. With few exceptions it seems that the fuel pump failures were mostly on the 2006 build dates. Let's keep our fingers crossed.

drexplode · 07-03-2007, 07:17 PM

who is the supplier...Bosch or Siemens? Also, what is the problem?

wj4 · 07-03-2007, 07:22 PM

Quote:

Also, what is the problem?

They don't work correctly causing cars to become immobilize.

They only take 1-2 hrs to install, but takes 30+ days to get the part in.

drexplode · 07-03-2007, 07:45 PM

work correctly as far as...start or while driving?

while driving is bad... i.e., loss of pressure which results in low flow during heavy engine demand.

RiXst3r · 07-03-2007, 07:47 PM

Quote:

Originally Posted by drexplode

work correctly as far as...start or while driving?

while driving is bad... i.e., loss of pressure which results in low flow during heavy engine demand.

its the new high pressure pump for the direct injection... it goes out and the car goes into limp mode and shudders and stalls. My car was in the shop for 7 weeks with a dead pump...

got 2 months payments, a 335i loaner, and a free aerokit front lip painted and installed as compensation...

drexplode · 07-03-2007, 07:56 PM

nice compensation!!

does anyone know the supplier of the high pressure pump? Bosch, Siemens, Hitatchi?

Basically when the high pressure pump fails, you are relying on low-side fuel pump pressure which is probably 4-7bar which is certainly not enough considering during normal operation its 4-12Mbar. Obviously the injectors are designed to open with 4-12Mbar, not .4-.7Mbar. Limp-home mode = bad, potential walk home.

SGP335i · 07-04-2007, 04:17 PM

I was told by my dealer that the problem has been fixed and newer production cars wont have any issues

mikey0120 · 07-04-2007, 05:02 PM

I wish I had my car back. It has been three weeks. No BMW Loaner either. I have Chrysler 300 which is not bad, but I want a BMW Loaner. I get the same song and dance about them changing fleets, etc.

krash · 07-04-2007, 05:24 PM

Quote:

Originally Posted by mikey0120

I wish I had my car back. It has been three weeks. No BMW Loaner either. I have Chrysler 300 which is not bad, but I want a BMW Loaner. I get the same song and dance about them changing fleets, etc.

what was you build date?

Zeroday · 07-04-2007, 05:41 PM

OK so what's the new part number for this new pump?

Zeroday · 07-04-2007, 05:42 PM

btw, i havent seen the decrease that you speak of and neither has my dealer.

lkevinl · 07-05-2007, 02:00 AM

FWIW, BMWNA claims the HPFP is fixed in "newer" cars. They wouldn't give me an exact build date as a cutoff but I know that 2007 build dates have the problem also.

Cadillac Johnson · 07-05-2007, 02:10 AM

I thought it was March 07'?

I would certainly hope that BMW has this problem fixed by now. I'm still waiting for an 08' model just to be safe, plus the new 16 speaker stereo doesn't hurt either..

STE92VE · 07-05-2007, 09:07 AM

Quote:

Originally Posted by BzzzBom

Over the last month the number of posts regarding fuel pump failures has dramatically decreased.

Maybe people finally learned how to you use the

feature!

Gort · 07-05-2007, 09:09 AM

Quote:

Originally Posted by drexplode

nice compensation!!

does anyone know the supplier of the high pressure pump? Bosch, Siemens, Hitatchi?

Basically when the high pressure pump fails, you are relying on low-side fuel pump pressure which is probably 4-7bar which is certainly not enough considering during normal operation its 4-12Mbar. Obviously the injectors are designed to open with 4-12Mbar, not .4-.7Mbar. Limp-home mode = bad, potential walk home.

Siemens VDO was the maker of the pumps with the problem. If you guys want to do a "Search" you will find a bazillion threads on this with info that is still current.

07-03-2007, 07:03 PM	#1
BzzzBom Major 93 Rep 1,216 Posts Drives: 05 R53 MINI / 09 335i Coupe Join Date: Jul 2006 Location: Los Angeles iTrader: (0)	Less fuel pump failures Over the last month the number of posts regarding fuel pump failures has dramatically decreased. I have noticed this on at least three BMW forums. With few exceptions it seems that the fuel pump failures were mostly on the 2006 build dates. Let's keep our fingers crossed.
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07-03-2007, 07:17 PM	#2
drexplode Brigadier General 1781 Rep 3,064 Posts Drives: G26 i4x Join Date: Jul 2007 Location: Walled Lake Michigan iTrader: (17)	who is the supplier...Bosch or Siemens? Also, what is the problem?
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07-03-2007, 07:45 PM	#4
drexplode Brigadier General 1781 Rep 3,064 Posts Drives: G26 i4x Join Date: Jul 2007 Location: Walled Lake Michigan iTrader: (17)	work correctly as far as...start or while driving? while driving is bad... i.e., loss of pressure which results in low flow during heavy engine demand.
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07-03-2007, 07:56 PM	#6
drexplode Brigadier General 1781 Rep 3,064 Posts Drives: G26 i4x Join Date: Jul 2007 Location: Walled Lake Michigan iTrader: (17)	nice compensation!! does anyone know the supplier of the high pressure pump? Bosch, Siemens, Hitatchi? Basically when the high pressure pump fails, you are relying on low-side fuel pump pressure which is probably 4-7bar which is certainly not enough considering during normal operation its 4-12Mbar. Obviously the injectors are designed to open with 4-12Mbar, not .4-.7Mbar. Limp-home mode = bad, potential walk home.
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07-04-2007, 04:17 PM	#7
SGP335i Lieutenant 8 Rep 525 Posts Drives: 2007 335i E92 Jet Blk Join Date: May 2007 Location: Gaithersburg, MD iTrader: (0)	I was told by my dealer that the problem has been fixed and newer production cars wont have any issues __________________
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07-04-2007, 05:02 PM	#8
mikey0120 Lieutenant 41 Rep 452 Posts Drives: F10 535Xi M-Sport Join Date: Jul 2006 Location: Rockland County, NY iTrader: (11)	I wish I had my car back. It has been three weeks. No BMW Loaner either. I have Chrysler 300 which is not bad, but I want a BMW Loaner. I get the same song and dance about them changing fleets, etc. __________________ Retired: 2013 F10 535Xi M-Sport Retired: 2010 E90 335i M-Sport Retired: 2007 E90 335i Retired: 2001 E46 330i
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07-04-2007, 05:41 PM	#10
Zeroday Colonel 46 Rep 2,350 Posts Drives: Plymouth Volare Join Date: Aug 2006 Location: your nerves iTrader: (0)	OK so what's the new part number for this new pump?
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07-04-2007, 05:42 PM	#11
Zeroday Colonel 46 Rep 2,350 Posts Drives: Plymouth Volare Join Date: Aug 2006 Location: your nerves iTrader: (0)	btw, i havent seen the decrease that you speak of and neither has my dealer.
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07-05-2007, 02:00 AM	#12
lkevinl Lieutenant 35 Rep 521 Posts Drives: '07 335i 4dr Sport+Premium+Nav Join Date: Jan 2007 Location: So. Cal. iTrader: (0)	FWIW, BMWNA claims the HPFP is fixed in "newer" cars. They wouldn't give me an exact build date as a cutoff but I know that 2007 build dates have the problem also.
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07-05-2007, 02:10 AM	#13
Cadillac Johnson Free taco with stolen base 28 Rep 639 Posts Drives: 335i? GTR? RS5? Join Date: Jun 2007 Location: Milwaukee iTrader: (0)	I thought it was March 07'? I would certainly hope that BMW has this problem fixed by now. I'm still waiting for an 08' model just to be safe, plus the new 16 speaker stereo doesn't hurt either..
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