Does BMW replace HPFP with better/newer ones

yslee · 10-04-2009, 04:01 AM

I just recently had my HPFP replaced. I was wondering (from all the ppl who had theirs replaced multiple times) if the dealership replaced it with the exact same one it had before or a new and improved one. Basically, did BMW come out with newer HPFP since they knew it had problems?

deletedelete · 10-04-2009, 04:03 AM

Quote:

Originally Posted by yslee

I just recently had my HPFP replaced. I was wondering (from all the ppl who had theirs replaced multiple times) if the dealership replaced it with the exact same one it had before or a new and improved one. Basically, did BMW come out with newer HPFP since they knew it had problems?

There have been a few revisions. All of them fail. There is no cure.

boom · 10-04-2009, 07:07 AM

I've heard that the pumps fail because the pressure sensors fail. It was something like the high pressure sensor reads too low and car blows out it's pump seals because it never relieves the pressure. Therefore pump replacements should come with sensor replacements or your new pump will fail for the same reason the old one did. Does anyone know if this is true?

e.n335 · 10-04-2009, 08:21 AM

Quote:

Originally Posted by boom

I've heard that the pumps fail because the pressure sensors fail. It was something like the high pressure sensor reads too low and car blows out it's pump seals because it never relieves the pressure. Therefore pump replacements should come with sensor replacements or your new pump will fail for the same reason the old one did. Does anyone know if this is true?

HPFP failures are not common in Europe. IMO it's more a gas related issue. Also, most pumps don't fail immediately, the story begins with long engine cranking when you start the car. However, this does not say that the reason isn't the pressure sensor having problems with some kind of gas.

In addition there have been piggies around that raised fuel pressure to keep being undetectable after "doomsday" for the MSD81 ECU. I don't know whether this is still the case but would certainly not increase reliability of an already prone component.

40.000 miles on the 1st HPFP up to now.

A418t81 · 10-04-2009, 09:45 AM

Quote:

Originally Posted by e.n335

HPFP failures are not common in Europe. IMO it's more a gas related issue. Also, most pumps don't fail immediately, the story begins with long engine cranking when you start the car. However, this does not say that the reason isn't the pressure sensor having problems with some kind of gas.

In addition there have been piggies around that raised fuel pressure to keep being undetectable after "doomsday" for the MSD81 ECU. I don't know whether this is still the case but would certainly not increase reliability of an already prone component.

40.000 miles on the 1st HPFP up to now.

I made it to a little over 40k on my original. The second pump failed after 2k miles. The 3rd has been ok for about 5k now. I have never used fuel pressure modification as I'm pre 29.2

kirby135i · 10-04-2009, 09:47 AM

bmw keeps putting the same pumps in...CP-E just came out when a new hpfp that is supposed to be better than OEM.

e.n335 · 10-04-2009, 12:33 PM

Quote:

Originally Posted by A418t81

I made it to a little over 40k on my original. The second pump failed after 2k miles. The 3rd has been ok for about 5k now. I have never used fuel pressure modification as I'm pre 29.2

Quote:

Originally Posted by boom

I've heard that the pumps fail because the pressure sensors fail. It was something like the high pressure sensor reads too low and car blows out it's pump seals because it never relieves the pressure. Therefore pump replacements should come with sensor replacements or your new pump will fail for the same reason the old one did. Does anyone know if this is true?

So IMO it would be worth a try for a high pressure sensor replacement according to this new "rumor".

Ferre86 · 10-04-2009, 02:18 PM

changed mine recentlly , my dealer said that problem will not accure once again.. they said its new type of HPFP though..

kirby135i · 10-04-2009, 02:21 PM

Quote:

Originally Posted by Ferre86

changed mine recentlly , my dealer said that problem will not accure once again.. they said its new type of HPFP though..

thats prob BS...just had mine replaced and its the same hpfp...they just keep stocking the same failing components.

10-04-2009, 04:01 AM	#1
yslee Private First Class 7 Rep 108 Posts Drives: e93 335i, f80 m3 Join Date: Apr 2005 Location: florida iTrader: (0)	Does BMW replace HPFP with better/newer ones I just recently had my HPFP replaced. I was wondering (from all the ppl who had theirs replaced multiple times) if the dealership replaced it with the exact same one it had before or a new and improved one. Basically, did BMW come out with newer HPFP since they knew it had problems?
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10-04-2009, 07:07 AM	#3
boom My X5d tows my spec miata to the track. 74 Rep 1,254 Posts Drives: 2010 X5 35d Join Date: Sep 2009 Location: USA iTrader: (0)	I've heard that the pumps fail because the pressure sensors fail. It was something like the high pressure sensor reads too low and car blows out it's pump seals because it never relieves the pressure. Therefore pump replacements should come with sensor replacements or your new pump will fail for the same reason the old one did. Does anyone know if this is true?
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10-04-2009, 09:47 AM	#6
kirby135i Lieutenant 15 Rep 506 Posts Drives: bmw Join Date: Jun 2009 Location: here iTrader: (1)	bmw keeps putting the same pumps in...CP-E just came out when a new hpfp that is supposed to be better than OEM.
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10-04-2009, 02:18 PM	#8
Ferre86 Captain 38 Rep 944 Posts Drives: E93 M3/H2/SL350/Panamera 4/ Join Date: Mar 2009 Location: Turkey iTrader: (0)	changed mine recentlly , my dealer said that problem will not accure once again.. they said its new type of HPFP though.. __________________ http://www.youtube.com/user/Ferre86 \| e93 M-DCT ESS VT2-625 \| Akra Slip-on \| Challenge Race Catless x-pipe \| Challenge front lip \| Challenge Diffuser \| Carbon front grilles \| defi gauges control unit \| Macht Schnell gauge panel \| E93 M3 trunk Spoiler \| IND Carbon Fiber Side Markers \|
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