[Brucey335i]

Hello all, I noticed while logging that my fuel pressure sensor reads 32.2 underload.. it looks like it's all over the board but dips as low as 32.2 and spikes to 117. Curious as to that being the direct sign of the lpfp dying.. car starts right up fine and happeneds only under load

https://datazap.me/u/bruce335i/29dc?log=0&data=3-22

[feuer]

That is fuel cut off. Any recent repairs? Does it back fire?

[Brucey335i]

Originally Posted by feuer

That is fuel cut off. Any recent repairs? Does it back fire?

Voltage regulator close to 1000 miles ago, nothing fuel related. I'm believing it to be lpfp. Just wanted a second opinion. In the logs u can see it drops to 32.2

[feuer]

Originally Posted by Brucey335i

Voltage regulator close to 1000 miles ago, nothing fuel related. I'm believing it to be lpfp. Just wanted a second opinion. In the logs u can see it drops to 32.2

On the alternator? I had this problem too. It's fuel cut off. After 5-6 month of ignoring it because I couldn't find the problem it just went away. I replaced both pumps, both sensors, the module, re flash the dme, nothing. Was thinking is maybe injectors but issue went away before I replace them.

[Brucey335i]

Originally Posted by feuer

On the alternator? I had this problem too. It's fuel cut off. After 5-6 month of ignoring it because I couldn't find the problem it just went away. I replaced both pumps, both sensors, the module, re flash the dme, nothing. Was thinking is maybe injectors but issue went away before I replace them.

Trying to narrow it down to one fix rather then it all. The car has 100k on it now

[feuer]

Originally Posted by Brucey335i

Trying to narrow it down to one fix rather then it all. The car has 100k on it now

Nobody has/know the fix for this. At the time I had 3 x n54 so was easy and cheap to start swapping parts. I believe it was debris in fuel.

[Brucey335i]

Originally Posted by feuer

Nobody has/know the fix for this. At the time I had 3 x n54 so was easy and cheap to start swapping parts. I believe it was debris in fuel.

https://datazap.me/u/bruce335i/29dc-v2?log=0&data=3-22 newest log, fuel pump looks to be dropping to 45 WOT and staying 75 at idle.. any help appreciated

[feuer]

Originally Posted by Brucey335i

https://datazap.me/u/bruce335i/29dc-v2?log=0&data=3-22 newest log, fuel pump looks to be dropping to 45 WOT and staying 75 at idle.. any help appreciated

If I'm reading it correctly the LPFP is stable, the HPFP fluctuates but is expected and I replaced mine twice to find the issue persisted.

[Brucey335i]

Debating what Corner to go next

[feuer]

Originally Posted by Brucey335i

Debating what Corner to go next

I hope that you resolved this issue. Let us know