[lebaaron]

Originally Posted by AM340iMiami

WOOF! I also have a 2020 production build 5/19. I live in Miami so hopefully the pump holds up. If i got the plastic one.

No more warranty?

[b58.fazil]

Id like to add that I took my m340 in today as I still have about 2 years left on my CPO warranty. I’m also tuned and the dealership knows this as well.

They are fairly confident that the oil pump will be replaced under warranty as am I.

I will update soon enough once I get updated on the situation as well as how long it’s going to take.

Godspeed everyone!

[AM340iMiami]

Originally Posted by lebaaron

No more warranty?

Its still covered under the 4 year 50k limited warranty. Does that mean I can take it in and have them replace the oil pump?

[lebaaron]

Originally Posted by AM340iMiami

Its still covered under the 4 year 50k limited warranty. Does that mean I can take it in and have them replace the oil pump?

Yes most likely -

[CrownRoyal79]

My oil pump was dying, audible whining noise from the engine and unable to measure the oil. After replacement, all is well. 3/19 production date M340i.

[iksana]

Hi guys. There is an revised oil pump for the B58TU that has the rotor housing made from steel not plastic. i just did one today and i can confirm it.
I have uploaded the images in this gallery : https://postimg.cc/gallery/LjMMvcw

Hope it helps. Upgrade your pumps guys if you dont want to grenade your engines. Cheers.

[prostcfc]

There is an updated oil pump, but I've never heard of an engine failing/grenading because of this; maybe given enough time (the whirring I've heard from some is concerning, rather than just not measuring oil level, where there are alternative methods for this).

[stunatu72]

Originally Posted by prostcfc

There is an updated oil pump, but I've never heard of an engine failing/grenading because of this; maybe given enough time (the whirring I've heard from some is concerning, rather than just not measuring oil level, where there are alternative methods for this).

A faulty oil pump results in a low or high oil pressure situation?

[seccsc]

Originally Posted by stunatu72

A faulty oil pump results in a low or high oil pressure situation?

Supposedly, high oil pressure.
https://g20.bimmerpost.com/forums/sh....php?t=2007969

[aleph-one]

03/2019 here. Haven't tried oil level measurement but in the interest of longevity I will likely do this job in the near future. The updated oil pump can simply be bolted on plug-n-play style, right? Is there anyone who offers a rebuild or do we need to buy the new part flat out?

[prostcfc]

Originally Posted by aleph-one

03/2019 here. Haven't tried oil level measurement but in the interest of longevity I will likely do this job in the near future. The updated oil pump can simply be bolted on plug-n-play style, right? Is there anyone who offers a rebuild or do we need to buy the new part flat out?

The new part number is a direct replacement and nobody does rebuilds. I think it's $500-600 for parts, but not positive. It's not a simple job, requiring the oil pan out, requiring the front subframe to be dropped. I'm 10/19 build, 15,000 miles, and mine still reads. I'm not doing anything until it stops reading.

[aleph-one]

Originally Posted by prostcfc

The new part number is a direct replacement and nobody does rebuilds. I think it's $500-600 for parts, but not positive. It's not a simple job, requiring the oil pan out, requiring the front subframe to be dropped. I'm 10/19 build, 15,000 miles, and mine still reads. I'm not doing anything until it stops reading.

I mean at a shop, definitely not prepared to drop the subframe.

Well, engine oil level check completes quickly with no issues so I guess I'm good for now. Is the consensus that cars with the plastic pump wheel are guaranteed time bombs? Or could this be like the dreaded Porsche IMS bearing - where if you're going to have it then you're going to have it and if you aren't then you aren't, and the only way to tell is to just drive the damn car...

[GOTOFMS]

BMW will issue a voluntary recall 10 years from now. By then they'll only have a handful of engines/pumps to replace.

[prostcfc]

Originally Posted by aleph-one

I mean at a shop, definitely not prepared to drop the subframe.

Well, engine oil level check completes quickly with no issues so I guess I'm good for now. Is the consensus that cars with the plastic pump wheel are guaranteed time bombs? Or could this be like the dreaded Porsche IMS bearing - where if you're going to have it then you're going to have it and if you aren't then you aren't, and the only way to tell is to just drive the damn car...

I don't think I've seen an engine grenading from this, or a SIB regarding instances of it. However I recently saw a video of the cracked plastic piece which was concerning, but there was no indication of anything else occurring, and it was being changed simply because the oil level wouldn't measure.

[kamforka]

I had a replacement too, only sign was an incomplete oil measurement process, nothing else.
Dealer checked and offered to replace the sensor first, and since it didn't solve the issue then the oil pump.
As far as I was told they had to disassemble the front differential then remove the subframe and replace the pump. Then reverse order and a wheel alignment.
It took them a couple of days but ever since the car runs as before but now the oil measurement works so I suppose that was the root cause.
I don't have the details on which part was installed originally and what they replaced it with though.

[peeezy]

does this mean i have the metal oil pump?

[JacobM340i]

Originally Posted by peeezy

does this mean i have the metal oil pump?

Yours is 2019 I’m guessing which is a gen 1 b58, gen 1 b58 has plastic oil pump but its the one without issues so I wouldn’t worry one bit!

[DPG23]

Originally Posted by lebaaron

Odd enough after some driving today I tried to measure my oil level and it's not passing 18%... I guess I'm next in the line 😑

I also spotted a grinding noise when I turn left at a stop accelerating... Car has 15 000 km

It's very sad somehow....

What year is your car? I've got the same issues on a 2021 B58D, production date 10/2020.

[lebaaron]

Originally Posted by DPG23

What year is your car? I've got the same issues on a 2021 B58D, production date 10/2020.

So I was freaking out but you need to meet some condition such as not having the oil too hot to measure it. However my build production is 04/2019 so most likely I'm having the problematic oil pump.
I'm keeping an eye on the oil pressure at idle and boost to see if the numbers are fine. I think it is around 40 psi at idle and around 80 psi WOT

Try to measure your oil after a casual drive instead of a spirited drive maybe, but you should have the new oil pump version meaning your problem could be the oil level sensor.

[DPG23]

Originally Posted by lebaaron

So I was freaking out but you need to meet some condition such as not having the oil too hot to measure it. However my build production is 04/2019 so most likely I'm having the problematic oil pump.
I'm keeping an eye on the oil pressure at idle and boost to see if the numbers are fine. I think it is around 40 psi at idle and around 80 psi WOT

Try to measure your oil after a casual drive instead of a spirited drive maybe, but you should have the new oil pump version meaning your problem could be the oil level sensor.

Oil pump was bad, replaced it and oil level reads out correctly now.
So the oil pump issue is not limited to the early B58

[lebaaron]

Originally Posted by DPG23

Oil pump was bad, replaced it and oil level reads out correctly now.
So the oil pump issue is not limited to the early B58

Good to know you back on track! I'd be curious to know the part number of the old pump

[Rspade]

Originally Posted by Tomla

From what I am seeing the oil pumps in the earlier B58 engines are made with a plastic component that is known to fail. It looks like BMW improved the pump as some point and replaced the plastic with metal. I have searched for details but haven't found too much.


Does anyone know when the change to the all metal pump occurred?
How does the failure show, is there a complete/sudden loss of oil pressure or are there early signs?
How prevalent is the problem?


I ask because I live in a cold climate, it was -20 deg F for a few days last winter. And, have a B58 engine in a car made in early 2020. It would be good to catch the issue (if there is one) while the warranty is still in affect.

Having oil pump issue now. Supposedly they changed to the metal in 2021. should make it recall issue since they are changing parts but it is not