[Skrrtt335]

Today i was driving my car and it shut off while idling at a red light . car wont start only cranks. Had about 50 miles left in gas tank . i am guilty of driving the car low on gas plenty of times and ran out of gas about 3 times total . LPFP is showin 84 psi in log & HPFP IS SHOWING 80-85 Psi when cranking . checked the codes through bm3 and got these codes. im assuming its the hpfp but i want to see if anybody else has had this issue and if they solved it or if anybody has thoughts of what it can be . thanks

car also had stalling issue when i drove for long periods of time ( 1-2+ hours ) it would start back up ( only happened about 3-4 times since 2 years ago ) hasnt happened for about 6 months

BMW specialized shop is charging $520 for labor to replace hpfp . how hard is this to do myself and what tools would i need ? & is there a way to do it without removing manifold

21a023- combustion engine false start
11b401- high fuel pressure during or after he injection is enabled ( 2nd set of environmental conditions after a time delay - pressure too low
11a401- high fuel pressure when injected is enabled : pressure too low

[AmuroRay]

You can have my old one for free if you need it.

[Skrrtt335]

Originally Posted by AmuroRay

You can have my old one for free if you need it.

damnnnn g you about to bless me like that ? its my birthday today too i would appreciate that

[thejeremyman9]

How are you reading LPFP pressure?

[Skrrtt335]

Originally Posted by thejeremyman9

How are you reading LPFP pressure?

did a log with bm3 while cranking car and LPFP act raw is showing 84 psi
HPFP act raw is 80-85 while while cranking and without cranking ( car in on position ) with hpfp target at 1750 only while cranking

[thejeremyman9]

There is no LPFP pressure sensor, that's not real data.

But your HPFP pressure may suggest that your LPFP is working. can you hear it?

[Skrrtt335]

gotcha thanks for clearing that up , i didnt check for sound of the lpfp so ill do that .

[Skrrtt335]

lpfp is turning on going to replace hpfp will update

[Skrrtt335]

Originally Posted by AmuroRay

You can have my old one for free if you need it.

Replaced HPFP with the one you sent over and car is back on thanks bro

[AmuroRay]

Originally Posted by Skrrtt335

Replaced HPFP with the one you sent over and car is back on thanks bro

You're welcome!

[thejeremyman9]

I'm curious if the HPFP looked physically damaged? Failure is pretty rare since its mechanical

[Skrrtt335]

Originally Posted by thejeremyman9

I'm curious if the HPFP looked physically damaged? Failure is pretty rare since its mechanical

Looked normal to me i compared them side to side and were the same . The bad hpfp just had alot of debris & was dirty . i did run out of gas about 4 times idk if that has anything to do with it

[thejeremyman9]

Originally Posted by Skrrtt335

Looked normal to me i compared them side to side and were the same . The bad hpfp just had alot of debris & was dirty . i did run out of gas about 4 times idk if that has anything to do with it

That might be a good takeaway - running out of gas can do that.