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Scantrell Scantrell is offline
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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, 10 views)
File Type: csv 190611_1859.csv (487.2 KB, 9 views)

Last edited by Scantrell; 06-11-2019 at 05:07 PM..
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Scantrell Scantrell is offline
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Posts: 9
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Car: 2012 bmw 335i
Default 06-11-2019, 05:06 PM

Attached Files
File Type: csv 190611_1859.csv (487.2 KB, 11 views)
File Type: csv 190611_1840.csv (802 Bytes, 9 views)
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Dave @ BMS/Fuel-It!'s Avatar
Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Car: E92 335XI
Default 06-13-2019, 10:55 AM

Did you install the new sensor?


e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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