Car dies after starting.

Subwoofer

Sergeant
Jan 9, 2020
266
48
0
Ride
335i
Hey all, recently installed my Stage 2 LPFP. Took it out for a spin 2 nights ago. Drove WOT for ages everything was looking fine
(LPFP sensor has been broken for a while)

Today the car has just broken down. The first code I got was injector cut out.

Now the only code I get is 2FCA.

The car starts for about 2 seconds very poorly and then dies. It won’t stay on though.

Any idea what could be the problem?

I have an EKPM3 which has been coded for new walboro 450

Would a bad sensor cause the car to not even switch on for long ?

click here for a video of fuel pump priming

click here for a video of starting car

This graph is from the video start
 
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Subwoofer

Sergeant
Jan 9, 2020
266
48
0
Ride
335i
Double check the hoses connected to the pump, sounds like one hose is loose or didn't click in it's place.
Hopefully going to have a look when home. I don’t have the tool with me

I have a feeling the pump to fuel line might have disconnected as it was proper tight to get on

EDIT: but what I don’t understand Is how it was driving fine two days ago.. now it’s not... weird...
 
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E92-Ghandi

Corporal
Feb 25, 2018
113
39
0
Ride
2010 335i e92 DCT
I would pull it out again and double check on everything.

I have seen one weird case where pump just came loose and slept from the hanger. it was floating around in the fuel tank lol. Which hanger are you using? DIY? bucketless?
 

Subwoofer

Sergeant
Jan 9, 2020
266
48
0
Ride
335i
I would pull it out again and double check on everything.

I have seen one weird case where pump just came loose and slept from the hanger. it was floating around in the fuel tank lol. Which hanger are you using? DIY? bucketless?
Using stock bucket with custom fitting I made with normal top hat.

I setup the Venturi as well to work. So we will see when I take it off
 

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bahn

Sergeant
Platinum Vendor
Nov 5, 2016
250
414
0
Iowa
Hey all, recently installed my Stage 2 LPFP. Took it out for a spin 2 nights ago. Drove WOT for ages everything was looking fine
(LPFP sensor has been broken for a while)

Today the car has just broken down. The first code I got was injector cut out.

Now the only code I get is 2FCA.

The car starts for about 2 seconds very poorly and then dies. It won’t stay on though.

Any idea what could be the problem?

I have an EKPM3 which has been coded for new walboro 450

Would a bad sensor cause the car to not even switch on for long ?
How much gas was in it prior to the pump install? Might have bent the float or got it hung up on a hose. Could simply be out of gas.
 

Subwoofer

Sergeant
Jan 9, 2020
266
48
0
Ride
335i
How much gas was in it prior to the pump install? Might have bent the float or got it hung up on a hose. Could simply be out of gas.
Just checked the tank. All plumbing is correct and in place. Plenty of fuel in the tank and the bucket... what next ? 🥳
 

Subwoofer

Sergeant
Jan 9, 2020
266
48
0
Ride
335i
For some reason my new EKPM3 is not responding. Would that cause this problem ? I only replaced it the other day. Although when I changed pump I didn’t unplug battery ?
 

Subwoofer

Sergeant
Jan 9, 2020
266
48
0
Ride
335i
So I’ve reset the adaptations. The HPFP rail pressure is stuck around 20-30 max even when started. Could it possibly be a broken HPFP ?
 

Subwoofer

Sergeant
Jan 9, 2020
266
48
0
Ride
335i
What is your lpfp and hpfp psi?
LPFP was around 85-90 before start and HPFP was around 20-26 and didn’t rise when trying to start.
It would start and sputter and die again

I’ve attached a log also, of start up.

 

b4llistic

Corporal
Nov 22, 2018
119
90
0
Ride
BMW N54
EDIT: Thanks your finding and reading my post. Unfortunately, Spoolstreet is no longer a neutral platform where we can have honest discussions on subjects and products freely.
For this reason I have deleted all information I posted on the forums.
 
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Subwoofer

Sergeant
Jan 9, 2020
266
48
0
Ride
335i
Just started up this morning.

If I put throttle it doesn’t die.

here’s a log

 

Subwoofer

Sergeant
Jan 9, 2020
266
48
0
Ride
335i
So started it this morning.

kept it around 2k revs. Even with foot on accelerator the car dies and then is hard start and death again.
Attached MHD codes
Also attached a log of the start and die

Terminal 15 is because Vacuum on exhaust is unplugged...



Everything’s look towards the HPFP right ?
Not a fuel filter etc ?

I think my LPFP sensor is working. And obviously it’s around 80 psi as it’s a brand new walboro 450 Venturi setup
 

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