Start up (cold OR warm)- car sounds like it is about to die

KaiserN54 · 08-23-2012, 05:53 PM

My car sounds like it wants to die when I start it. I am running a custom e85/93 map that I got another e90post user provided. (thank you) However, the car does this even on when running straight 93. It also does it on map 0. I have attached a txt of my datalog. The problem happens regardless of engine temp. I am seeing CAN DME code 10739- Low pressure fuel sensor. Is that what needs replaced?

KaiserN54 · 08-23-2012, 07:07 PM

No one?

KaiserN54 · 08-23-2012, 08:01 PM

Hello? I think its a hardware issue but I could use some insight.

turb0mik3 · 08-23-2012, 08:11 PM

video of tach and speedo please?

KaiserN54 · 08-23-2012, 11:01 PM

Quote:

Originally Posted by turb0mike

video of tach and speedo please?

I will get one tommorrow morning on the way work. thanks

secretsquirrel · 08-23-2012, 11:08 PM

The fact that you have a LPF sensor error usually point to your Low pressure fuel sensor having issues. As a result, your HPFP has probably been stressed and is about to go out. You should make an appointment with your dealer. Your car is about to die on you. Make sure its on your terms and not in the middle of the street.

cn555ic · 08-24-2012, 07:38 AM

Change out the LP sensor...I had the same symptoms and code 29F3 and changing it out fixed it//

08-23-2012, 07:07 PM	#2
KaiserN54 First Lieutenant 29 Rep 332 Posts Drives: 2007 335I Join Date: Mar 2012 Location: Turbotown iTrader: (0)	No one?
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08-23-2012, 08:01 PM	#3
KaiserN54 First Lieutenant 29 Rep 332 Posts Drives: 2007 335I Join Date: Mar 2012 Location: Turbotown iTrader: (0)	Hello? I think its a hardware issue but I could use some insight.
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08-23-2012, 08:11 PM	#4
turb0mik3 242 Rep 2,781 Posts Drives: E90 335i Racecar Join Date: Jan 2010 Location: San Diego, CA iTrader: (1) Garage List 2010 BMW 335i [8.90]	video of tach and speedo please? __________________ HG Motorsports \| Motiv Motorsport \| Sparta Evolution \| BBS Motorsports \| Sabelt \| JRZ \| NASA ST1 SoCal --- 554whp/487wtrq --- 3200lbs <<YouTube Channel w/ Race Videos>>
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08-23-2012, 11:08 PM	#6
secretsquirrel Colonel 130 Rep 2,291 Posts Drives: f80 Join Date: Dec 2010 Location: Far North Dallas iTrader: (2)	The fact that you have a LPF sensor error usually point to your Low pressure fuel sensor having issues. As a result, your HPFP has probably been stressed and is about to go out. You should make an appointment with your dealer. Your car is about to die on you. Make sure its on your terms and not in the middle of the street.
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08-24-2012, 07:38 AM	#7
cn555ic 441 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Change out the LP sensor...I had the same symptoms and code 29F3 and changing it out fixed it//
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