P30FE- Noobie needs help

[lulz_m3]

This is called lying.

My hood can be popped whenever you would like to inspect.

[Autobahn335i]

shouldn't a sticking wastegate be sticking at any temperatures though?

I've read about sticking N54 wastegates when tracking (road course) in hot climate. So it could definitely be related to outside temps and not be happening with lower outside temperatures.

[teknic90]

I am getting the same damn issues with the same codes (P30FE and P3100) did anyone ever find the true root cause of the problem? I'm not under warranty but I sure would love a new set of turbos

I ran this with the JB4 on map 5 and then on map 0 and I get the same codes.

08 335i / 67K / DP's / Charge pipe / JB4

[Fmoreira]

I am getting the same problem too with the car completely stock... Any update?

[Sticky]

With the car completely stock??

[Fmoreira]

Yep, after I installed the jb4, my car started to overboost, so I remove the jb4 and it kept doing it. Then I took it to the dealership because the indy shop couldn't fugure it out either. So far bmw delearship replaced turbos, solenoid, vacuum lines and boost sensor, and it keep doing the same thing. So frustrated, I been dealing with this for the last 2 months, and nobody cant fix it...

[c0ris]

I also get this code at WOT but only occasional, goes into limp mode and I clear it and carry on...Would be good to see the known solution(s)

[Sticky]

Yep, after I installed the jb4, my car started to overboost, so I remove the jb4 and it kept doing it. Then I took it to the dealership because the indy shop couldn't fugure it out either. So far bmw delearship replaced turbos, solenoid, vacuum lines and boost sensor, and it keep doing the same thing. So frustrated, I been dealing with this for the last 2 months, and nobody cant fix it...

Did you talk to @Terry@BMS?

[scflaw]

i solved it by replacing my low pressure fuel pump. I don't know exactly why it caused the exact code but my shop told me that my lpfp was clogged and wasn't running properly. *knock on wood* haven't had it since. Don't know if your problem is the same as mine but taking out and checking the lpfp should be pretty easy for a person with reasonable mechanic skills. I hope that solves your issue.

[Fmoreira]

Were you having this issue with the car stock? Bmw doesn't want to change the fuel pump because there is no code indicating that could be the fuel pump. What codes were you getting? I am only getting 30fe and 3100

[Fmoreira]

Sticky, Yes I did, but since it is doing with th car complety stock, there is nothing they can do about it.

[Sticky]

Sticky, Yes I did, but since it is doing with th car complety stock, there is nothing they can do about it.

Duh. Good luck getting this resolved but this is something for the dealer/factory.

I feel your pain as I never want to deal with a BMW dealer or their factory BS ever again in my life.

[Evil///M]

Has anyone ever figured this out? I understand there could be a number of reasons for this happening. I've been dealing with this for months now. First thought it was the wastegate solenoids, then I thought it was my tune.. the weirdest part is there's no change in performance or drivability it will just go into limp mode occasionally, I turn the car off then back on and it's fine. Another thing is when looking at WGDC with the accessport it will sometimes read 0 simultaneously on both banks, but there's still no change in boost or acceleration when I give it throttle... Very annoying issue.

[Sticky]

Has anyone ever figured this out? I understand there could be a number of reasons for this happening. I've been dealing with this for months now. First thought it was the wastegate solenoids, then I thought it was my tune.. the weirdest part is there's no change in performance or drivability it will just go into limp mode occasionally, I turn the car off then back on and it's fine. Another thing is when looking at WGDC with the accessport it will sometimes read 0 simultaneously on both banks, but there's still no change in boost or acceleration when I give it throttle... Very annoying issue.

Anyone?

[Evil///M]

Think I may have found the culprit. BOV not working properly, so I messed with it and drove around for a while the other day... Didn't notice any malfunctions with my WGDC. Just hope that was actually the problem and it doesnt show again!

[Sticky]

Think I may have found the culprit. BOV not working properly, so I messed with it and drove around for a while the other day... Didn't notice any malfunctions with my WGDC. Just hope that was actually the problem and it doesnt show again!

That's it? BOV? Solved?

[Evil///M]

That's it? BOV? Solved?

No not yet WGDC is still zeroing out. I haven't been able to drive it long enough to see if it goes into limp mode still, but it does seem a little better.
I'm going to try that vaccuum line mod and if that doesn't work I may have to replace the BOV.

[Evil///M]

Did the vacuum line mod, it seemed to help for a while, but now it's back and worse.

[Sticky]

Did the vacuum line mod, it seemed to help for a while, but now it's back and worse.

So now what do you do?

[Evil///M]

After doing more research now it seems that sometimes faulty vac lines could possibly be the issue. On one occasion someone fixed the issue by just changing the spark plugs.
So at this point the cheapest solution would be to go and replace all the vac lines again. Next would be the solenoids and canisters but I don't really see that being the problem. And it's a much more expensive repair than just vac lines, so I'll start with those first.