Misfiring, No cylinder codes

Boony · 04-07-2014, 12:47 PM

Hi guys,

Well the car has hit 72k, I changed the sparks about 1-2k miles ago, along with one of the coil packs that caused misfiring earlier, and at the time I had followed the code for specific cylinder misfires as I moved the sparks and coils around.

It's happening again now, and I pulled these codes from the JB4.
I'm thinking its HPFP or an injector, if so how could I tell? I'm also reading things about the LPFP...

It only misfires when accelerating hard with the tune on, stock with JB4 off its fine, I can even WOT.

Any ideas towards what these codes suggest?

2nice89 · 04-07-2014, 01:27 PM

Probably hpfp.. I think that last code has something to do with the fuel pump. Had a misfire yesterday & when i checked my car that last code came up along with another 1 saying high pressure fuel system. Its going to the dealer on monday.

Boony · 04-07-2014, 02:47 PM

Thats what I was thinking as well, considering the car upon hard acceleration/WOT pretty much instantly stops because fuel is cut immediately and then it starts misfiring, super rough idle, and I have to stop and restart the car in order for it to be back to normal.

I'm not sure as to recalls if I'm covered for injectors though; if it was an injector/coilpack/spark plug it would say which cylinder no?
In this case it seems to be the fuel pump considering fuel injection rail code for the pressure sensor.. but still not sure.

BAL278 · 04-07-2014, 03:38 PM

either HPFP or low pressure fuel sensor

Boony · 04-08-2014, 03:59 PM

Why are the DME codes occurring, because it's cutting fuel as the HPFP isn't working / the pressure sensor is causing it?

Jeff@TopGearSolutions · 04-08-2014, 04:01 PM

Have you had the battery cable recall done and how old is your battery?

Boony · 04-08-2014, 04:16 PM

The battery is the original from 07. I didn't have any battery recall done, but in that light I do get a battery discharge/low charge light in the dash. But I just got it back from the body shop after 2 months, the battery had died when I picked it up...

I have an amp+sub installed as well, but it is wired correctly with the correct on/off lead wired to it. It does sleep after the car cuts overall power. Would any of this shed some light to whats going on?

04-07-2014, 12:47 PM	#1
Boony Lemonhead 38 Rep 109 Posts Drives: 07' E90 335i Join Date: Apr 2011 Location: New York, NY iTrader: (2) Garage List 2007 BMW 335i [9.67]	Misfiring, No cylinder codes Hi guys, Well the car has hit 72k, I changed the sparks about 1-2k miles ago, along with one of the coil packs that caused misfiring earlier, and at the time I had followed the code for specific cylinder misfires as I moved the sparks and coils around. It's happening again now, and I pulled these codes from the JB4. I'm thinking its HPFP or an injector, if so how could I tell? I'm also reading things about the LPFP... It only misfires when accelerating hard with the tune on, stock with JB4 off its fine, I can even WOT. Any ideas towards what these codes suggest? Attached Images __________________ FBO-007-N54-JB4-MHD-WTF-BBQ
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04-07-2014, 01:27 PM	#2
2nice89 Banned 30 Rep 242 Posts Drives: 2007 e92 335i Join Date: Aug 2012 Location: Queens Village iTrader: (0) Garage List 2007 335i [1.00]	Probably hpfp.. I think that last code has something to do with the fuel pump. Had a misfire yesterday & when i checked my car that last code came up along with another 1 saying high pressure fuel system. Its going to the dealer on monday.
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04-07-2014, 02:47 PM	#3
Boony Lemonhead 38 Rep 109 Posts Drives: 07' E90 335i Join Date: Apr 2011 Location: New York, NY iTrader: (2) Garage List 2007 BMW 335i [9.67]	Thats what I was thinking as well, considering the car upon hard acceleration/WOT pretty much instantly stops because fuel is cut immediately and then it starts misfiring, super rough idle, and I have to stop and restart the car in order for it to be back to normal. I'm not sure as to recalls if I'm covered for injectors though; if it was an injector/coilpack/spark plug it would say which cylinder no? In this case it seems to be the fuel pump considering fuel injection rail code for the pressure sensor.. but still not sure. __________________ FBO-007-N54-JB4-MHD-WTF-BBQ
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04-07-2014, 03:38 PM	#4
BAL278 Major 48 Rep 1,010 Posts Drives: E92 335xi JB Join Date: Jun 2011 Location: North NJ iTrader: (3)	either HPFP or low pressure fuel sensor __________________ 2008 335xi Jet Black//Coral Red VTT Stage 1+// Procede V5//VRSF DPs//AMS FMIC//KW V1//M3 Sways & Sub Bushings// Alpina AT flash Apex EC-7//Michelin PSS//Dinan CAI
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04-08-2014, 03:59 PM	#5
Boony Lemonhead 38 Rep 109 Posts Drives: 07' E90 335i Join Date: Apr 2011 Location: New York, NY iTrader: (2) Garage List 2007 BMW 335i [9.67]	Why are the DME codes occurring, because it's cutting fuel as the HPFP isn't working / the pressure sensor is causing it? __________________ FBO-007-N54-JB4-MHD-WTF-BBQ
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04-08-2014, 04:01 PM	#6
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Have you had the battery cable recall done and how old is your battery?
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04-08-2014, 04:16 PM	#7
Boony Lemonhead 38 Rep 109 Posts Drives: 07' E90 335i Join Date: Apr 2011 Location: New York, NY iTrader: (2) Garage List 2007 BMW 335i [9.67]	The battery is the original from 07. I didn't have any battery recall done, but in that light I do get a battery discharge/low charge light in the dash. But I just got it back from the body shop after 2 months, the battery had died when I picked it up... I have an amp+sub installed as well, but it is wired correctly with the correct on/off lead wired to it. It does sleep after the car cuts overall power. Would any of this shed some light to whats going on? __________________ FBO-007-N54-JB4-MHD-WTF-BBQ Last edited by Boony; 04-08-2014 at 04:34 PM..
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