New HPFP from BMW out (part # 943)

[IZAGLO]

has anyone actually that has had there pumps replaced got a answer from BMW pin pointing which part of the pumps that are possibly failing???? I no my last platform the Speed3 which had a HPFP there was very few failures running stock power levels...But when moded over 350WHP the pumps could not keep up as the pressure these HPFP are kicking out are over 1600psi...hence why CP-E and others have upgraded pumps to deal with this issue...but being new here, what is BMW's answer to all who have had replacements??
I agree on the software update...my car feels good....but agreed a broken pump is a broken pump, and most cars do not even run on a bum pump....so why would software improve a bum pump or the way the car runs??..Will see.....but if BMW removed all the updated pumps from your dealership they must feel its a software issue...

[DBFIU]

The real question I have is, what are the main differences between an 881 and 943 pump. If anyone can point out a blatant difference or two, it would give us a clue as to what BMW decided to re-design, at least a hint to a cause of failure.

What would that give the consumer? Nothing, I am just curious.

[ronnyek]

Originally Posted by IZAGLO

has anyone actually that has had there pumps replaced got a answer from BMW pin pointing which part of the pumps that are possibly failing???? I no my last platform the Speed3 which had a HPFP there was very few failures running stock power levels...But when moded over 350WHP the pumps could not keep up as the pressure these HPFP are kicking out are over 1600psi...hence why CP-E and others have upgraded pumps to deal with this issue...but being new here, what is BMW's answer to all who have had replacements??
I agree on the software update...my car feels good....but agreed a broken pump is a broken pump, and most cars do not even run on a bum pump....so why would software improve a bum pump or the way the car runs??..Will see.....but if BMW removed all the updated pumps from your dealership they must feel its a software issue...

Thats why I think this flash they issued that I had installed is just trying to reoslve symptoms until they improve the design of the pump. I never got check engine lights on either failure, they just get slow cranking and reduced power...

I think they simply run the low pressure pumps to get fuel into the HPFP so as soon as the engine turns over a few times, pressure should be where it needs to be. Also, if they said well lets just turn up boost and fuel targets, they could get car feeling like stock even though its just improving symptoms, not fixing the problem.

[ronnyek]

Its all speculation, but look at the symptoms, its not an all and all failure, but the inability to keep fuel pressure... both in standby over night, and running and at speed.

Fuel pressure bleeds out because of seals or a flat out leak of some sort, and at speed, the car cant maintain full pressure especially as low rpms as it could with a good pump... so you should see some lag, and perhaps some ecu correcting for lean conditions.

My car after flash still takes longer than stock to start, but much better than days before with flatout failure

[ronnyek]

Originally Posted by TrackRat

BMW might have actually taken back the 881 HPFPs not 943 HPFPs. The 881 HPFPs had a high failure rate like all the prior models for the N54 engine. No one knows if the 943 pump will have a better, worse or the same failure rate as the 881 pumps.

The guy I know there specifically stated 943 pumps, brand new model supposed to fix leaks released like 2-3 mo ago... and they had a back stock and all of them were taken back. I have a 881 pump in my car now, and its on the fritz.

[jeremydgreat]

Originally Posted by TrackRat

Well maybe the 943 pumps are shitze too?

No evidence of that yet. There was someone who said that their dealer said he'd replaced a couple pumps within a week or two after the the 943's release... but so far, we haven't heard of anyone on 1Addicts or the other boards who specifically had the 943 installed and then had it fail.

At the rate the other pumps were failing, if we can go three or four months without a verified 943 failure, I think that's a good sign.

(Hey look, I'm being optimistic!)

[GemBm]

My HPFP just failed I have just over 17500 miles on it. No mods straight stock! Took it to dealer on Tuesday morning after super long crank. They had to send diagnostic information to Munich to get approval to replace pump. They told them first to load new software and if that does not fix it replace pump. Seems like the service tech is skeptical about the software fix. He said the car will be ready by tomorrow.

[ronnyek]

it wont fix hardware failure, but it will help make car better to drive until there is a full blown failure. With the 943 pumps sounding like they are beign recalled by at least my dealer, I am happy with this solution for now.

[Juicer]

Originally Posted by ronnyek

it wont fix hardware failure, but it will help make car better to drive until there is a full blown failure. With the 943 pumps sounding like they are beign recalled by at least my dealer, I am happy with this solution for now.

I wonder what they are going to use to replace a completely failed HPFP where the car is undrivable, if the 943's are being pulled. Software may help prevent it or even make the symptoms better if it just starts to fail, but it's not going to bring the pump back to life. Back to the 881 pumps?

[My135]

I am having long cranks recently and I am waiting for the HPFP to die. It sounds like the new 943 is not necessary better than the old ones.

[jeremydgreat]

Originally Posted by My135

I am having long cranks recently and I am waiting for the HPFP to die. It sounds like the new 943 is not necessary better than the old ones.

Uh oh! If it does indeed go out, don't forget to head back here and tell us.

[spellbmw]

Originally Posted by My135

I am having long cranks recently and I am waiting for the HPFP to die. It sounds like the new 943 is not necessary better than the old ones.

Since it is so new in the field, I seriously doubt that BMW pulled the 943, most likely the one it was designed to replace. My 2010 - with about 5600 miles on it - had its pump replaced this past week. Not a single long crank, just a sudden 'Engine Malfunction' and limp mode to the dealership; was back to me with both the software update (nice but not the solution) and new pump (943) in less that 24 hours. Gas mileage seems better with software update. Like everyone else, I hope this pump is gold...but if not, I'm confident BMW will continue to work the issue. In the meantime, am enjoying the ride immensely.

[Irishace]

Damn, here is to hoping an aftermarket solution is in the works. It seems we can't trust the manufacturer to solve their own issues. I love my car but I am just waiting for the HPFP to drop. It really is so discouraging to see so many folks having this issue.

[semaj]

I just wanted to chime in and say that my 2010 135i with approx 3600 had a HPFP failure today--long crank at start followed by a yellow engine failure light and then severe studdering / stalling of the engine. I limped it back home and I am currently waited for it to be towed to the Crevier BMW dealership in Santa Ana.

What a bummer!

[semaj]

I just wanted to chime in and say that my 2010 135i with approx 3600 had a HPFP failure today--long crank at start followed by a yellow engine failure light and then severe studdering / stalling of the engine. I limped it back home and I am currently waited for it to be towed to the Crevier BMW dealership in Santa Ana.

What a bummer!

[spellbmw]

Originally Posted by semaj

I just wanted to chime in and say that my 2010 135i with approx 3600 had a HPFP failure today--long crank at start followed by a yellow engine failure light and then severe studdering / stalling of the engine. I limped it back home and I am currently waited for it to be towed to the Crevier BMW dealership in Santa Ana.

What a bummer!

Yea, makes a few of us MY10 guys... Same symptoms but not a single long crank...just 'went' while starting to accelerate at low speeds.

[spellbmw]

Originally Posted by semaj

I just wanted to chime in and say that my 2010 135i with approx 3600 had a HPFP failure today--long crank at start followed by a yellow engine failure light and then severe studdering / stalling of the engine. I limped it back home and I am currently waited for it to be towed to the Crevier BMW dealership in Santa Ana.

What a bummer!

Yea, makes a few of us MY10 guys... Same symptoms but not a single long crank...just 'went' while starting to accelerate at low speeds.

[ennislaw]

Yes, I have a 2010 135i, probably Nov 09 build, but only 800+ miles so far. I'm just waiting, lol.

pge

[cpt97m3]

I was getting long cranks, and I took it to my dealer, and they said they could not reproduce the issue. Now it got to the point where I had to try 5 or 6 times to start the car sometimes. Each time is like 8-10 seconds. But I'm not seeing any check engine lights, and once it is running, it seems to run fine. Should I take it back in, or just wait for it to fail or show a CE light? I have an '09 with 5800 miles.

[yandy]

Originally Posted by cpt97m3

I was getting long cranks, and I took it to my dealer, and they said they could not reproduce the issue. Now it got to the point where I had to try 5 or 6 times to start the car sometimes. Each time is like 8-10 seconds. But I'm not seeing any check engine lights, and once it is running, it seems to run fine. Should I take it back in, or just wait for it to fail or show a CE light? I have an '09 with 5800 miles.

take it back, and don't take the crap from the dealer... if they tell you the same thing, take it back the next day.. until they do something about it.

[sbefar01]

Is it likely that we are losing HP with these pumps (less fuel delivered) . . .or is it just long cranks, failure lights and limp mode until it fails completely?

[sbefar01]

doubled message . . something wrong with site, edited