N54Tech.com - International Turbo Racing Discussion
Scantrell Scantrell is offline
New Member
Posts: 9
Join Date: Sep 2017
Car: 2012 bmw 335i
Default Please Help: Very rough Start (will barley run) - 06-11-2019, 04:58 PM

2012 bmw e92 335i Fbo JB4 Stage 2.
Checked all connections everything is right. My Car won't start now. I installed a used (30k miles) hpfp 2 days ago it worked fine for 2 days. it wouldn't start after trying about 15 times I finally got it to stay running but was idling very rough. Itll start back up when car is still hot but once it cools down it's hard to start. Getting code P10D9 while driving car is barley making power almost like limp mode.

Also I was looking around the hpfp and I noticed the round drum piece with the lip around it came off the hpfp. I put it back into the pump maybe that's what's causing this there was also alot of oil around it.

I swapped a new high Pressure fuel sensor in and got the code 2BDA - Rail pressure sensor, electrical: Short circuit to ground. This is the only code i received, P10D9 is gone but still same exact issues. I swapped the old sensor back in and returned the new sensor because I thought it might be a faulty Sensor. 2BDA goes away and P10D9 returns.

Today I replaced the fuel Regulator and the LPFP. nothing changed same issues. I have another high pressure fuel sensor coming in the mail tomorrow.
I also attempted to do a long but I dont know if i did it right. it doesn't look right.
Attached Files
File Type: csv 190611_1840.csv (802 Bytes, 30 views)
File Type: csv 190611_1859.csv (487.2 KB, 30 views)

Last edited by Scantrell; 06-11-2019 at 05:07 PM..
Reply With Quote
Scantrell Scantrell is offline
New Member
Posts: 9
Join Date: Sep 2017
Car: 2012 bmw 335i
Default 06-11-2019, 05:06 PM

Attached Files
File Type: csv 190611_1859.csv (487.2 KB, 27 views)
File Type: csv 190611_1840.csv (802 Bytes, 29 views)
Reply With Quote
Dave @ BMS/Fuel-It!'s Avatar
Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
Super Moderator
Posts: 7,680
Join Date: Apr 2014
Car: E92 335XI
Default 06-13-2019, 10:55 AM

Did you install the new sensor?

Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

vBulletin Skin developed by: vBStyles.com
Copyright 2007 - 2020, N54tech.com