[thejeremyman9]

Originally Posted by TerryGTX

yea, on FCPeuro, i was able to find a part in fuel system- it’s called “sucking jet pump” which passively transfers the fuel from driver side to passenger side where the LPFP locates.
So my friend Steve changed his LPFP HPFP and new EKP module...and stil having the same issue. However, there were few time where he was able to slosh the fuel by agreesive left-and-right steering to save the car from stalling.

I understand the concept but the "sucking jet pump" part you linked previously goes under the hood and connects to the CP. It doesn't transfer fuel between the tanks...?

https://www.fcpeuro.com/products/bmw...38#description

I still have not seen any part that actually transfers the fuel, but im sure one has to exist as the transfer happens somehow.

[TerryGTX]

Originally Posted by thejeremyman9

I understand the concept but the "sucking jet pump" part you linked previously goes under the hood and connects to the CP. It doesn't transfer fuel between the tanks...?

https://www.fcpeuro.com/products/bmw...38#description

I still have not seen any part that actually transfers the fuel, but im sure one has to exist as the transfer happens somehow.

The sucking jet pump does passively transfers the fuel according to my understanding. If you check the diagrams, the LPFP creates a negative pressure so the fuel in sucking jet pump could flow.

[zole2112]

I had similar issues with mine, ultimately it was the HPFP. I changed from my Stage 2 LPFP back to the stock LPFP and it was good for about a day so I thought that was it but then it happened again. After changing the HPFP last fall I haven't had an issue since.

The first instance stalling was going about 25 mph along with a low pressure code, I forget what it was. This led me to change my LPFP back to stock, I've had lots of practice so I can change in in like 15 min lol. After that I had it stall at highway speed along with a high pressure code, then I replaced the HPFP which fixed my issue.

[TerryGTX]

Originally Posted by zole2112

I had similar issues with mine, ultimately it was the HPFP. I changed from my Stage 2 LPFP back to the stock LPFP and it was good for about a day so I thought that was it but then it happened again. After changing the HPFP last fall I haven't had an issue since.

The first instance stalling was going about 25 mph along with a low pressure code, I forget what it was. This led me to change my LPFP back to stock, I've had lots of practice so I can change in in like 15 min lol. After that I had it stall at highway speed along with a high pressure code, then I replaced the HPFP which fixed my issue.

Which HPFP did you go with?

[zole2112]

Originally Posted by TerryGTX

Which HPFP did you go with?

I just went stock, if the Dorsch would have been out I would have probably done that. https://www.fcpeuro.com/products/bmw...4231kt#fitment

[peacebomber]

Originally Posted by TerryGTX

yea, on FCPeuro, i was able to find a part in fuel system- it’s called “sucking jet pump” which passively transfers the fuel from driver side to passenger side where the LPFP locates.
So my friend Steve changed his LPFP HPFP and new EKP module...and stil having the same issue. However, there were few time where he was able to slosh the fuel by agreesive left-and-right steering to save the car from stalling.

did he change his tank? or fix this problem

[TerryGTX]

Turned out to be his LPFP. He replaced with a new one. Also his cleaned fuel tank might also play a factor here.
Well...for me my solution is to keep my fuel always above 1/4 tank. Puzzle solved.

[n55david]

so I recently had this issue. wasn't the fuel pump fyi. however replacing it would fix the problem by association.