UPDATE 3/18/19: Drivetrain malfunction and limp home mode

khj24 · 03-14-2019, 10:39 PM

I was driving around 40 mph and I see a drivetrain malfunction pop up and then the car starts running terribly. I read the codes and it comes back as misfire on cyl 6 and low fuel pressure bank 1. I disconnected and reconnected the battery which didn't help. There's an obvious fuel smell and it actually comes out the exhaust when I ran it(because no combustion). The whole car sputters and shakes with an RPM that's all over the place. Anybody share a similar experience? Coil packs? Plugs? Maybe bad battery? It's off to the dealer tomorrow, just curious if someone can relate.
Thanks!

3/18/19- 4 leaking injectors replaced and 6 new plugs later shes back. Car runs perfectly, stressful few days but I am glad it all came out okay. Also looks like they did away with the $50 CPO copay as my invoice came up as N/C.

328iX · 03-14-2019, 10:45 PM

Fuel pressure regulator?

That would cause the low fuel pressure code, but also can cause an over fueling? that's my guess.. you could try swapping coils and see if the misfire moves between cylinders

obert · 03-14-2019, 10:46 PM

Bad fuel pump of timing chain issues. At least these are the things I have been reading on here lately when it comes to limp mode drive train malfunction.

There was a dead battery that had some of your issues but just the ruff running but no codes of fuel smell.

khj24 · 03-14-2019, 10:49 PM

Quote:

Originally Posted by 328dX

Fuel pressure regulator?

That would cause the low fuel pressure code, but also can cause an over fueling? that's my guess.. you could try swapping coils and see if the misfire moves between cylinders

It was on the side of the road and dark, but I realized that would've been a good option when I gave up. I doubt it's anything with the block itself, I think it's electrical as it cranks just fine.

RMachuca3d · 03-14-2019, 11:05 PM

If its an injector malfunction and is putting in too much gas it can water down the oil lubrication and cause cylinder wall damage, be careful.

khj24 · 03-14-2019, 11:11 PM

Quote:

Originally Posted by RMachuca3d

If its an injector malfunction and is putting in too much gas it can water down the oil lubrication and cause cylinder wall damage, be careful.

It was maybe run at idle for a minute total after because of that concern, definitely not driving it again. It's getting towed tomorrow.

khj24 · 03-14-2019, 11:15 PM

Also I remember seeing a thread about putting the car into neutral without turning it on and going underneath. Does anybody have a link or know how to do this? If not can you turn it off while in neutral and have it stay there?

khj24 · 03-18-2019, 03:42 PM

Quote:

Originally Posted by khj24

I was driving around 40 mph and I see a drivetrain malfunction pop up and then the car starts running terribly. I read the codes and it comes back as misfire on cyl 6 and low fuel pressure bank 1. I disconnected and reconnected the battery which didn't help. There's an obvious fuel smell and it actually comes out the exhaust when I ran it(because no combustion). The whole car sputters and shakes with an RPM that's all over the place. Anybody share a similar experience? Coil packs? Plugs? Maybe bad battery? It's off to the dealer tomorrow, just curious if someone can relate.
Thanks!

3/18/19- 4 leaking injectors replaced and 6 new plugs later shes back. Car runs perfectly, stressful few days but I am glad it all came out okay. Also looks like they did away with the $50 CPO copay as my invoice came up as N/C.

Post updated

bloodline129 · 03-18-2019, 04:10 PM

Awesome news man!!! Glad u got her back

XxThe_RemedyXx · 03-19-2019, 09:20 AM

Had some bad injectors myself. Watch out for another CEL. If you get one chances are your CAT got soaked with fuel and is damaged. Happened to me...

khj24 · 03-19-2019, 09:55 AM

Quote:

Originally Posted by XxThe_RemedyXx

Had some bad injectors myself. Watch out for another CEL. If you get one chances are your CAT got soaked with fuel and is damaged. Happened to me...

Since it was coming out the pipes I will definitely be on the lookout for CAT issues. I changed the oil the week before and sent off a sample, very curious to see if this was a sudden or gradual issue.

otay · 03-19-2019, 10:33 AM

N55? How many miles please?

328iX · 03-19-2019, 10:44 AM

Highly, highly, doubt you had 4 faulty injectors simultaneously, you got milked hard

BuefordTjustice · 03-19-2019, 10:50 AM

Quote:

Originally Posted by 328dX

Highly, highly, doubt you had 4 faulty injectors simultaneously, you got milked hard

I agree, for 4 to fail at the same time is very very unlikely. He's CPO so there's nobody to milk. I assume they looked at all of them and replaced what looked to be bad or going bad.

328iX · 03-19-2019, 10:51 AM

Quote:

Originally Posted by BuefordTjustice

I agree, for 4 to fail at the same time is very very unlikely. He's CPO so there's nobody to milk. I assume they looked at all of them and replaced what looked to bad or going bad.

ahh yeah i guess that's good then that it's not on his dime haha

khj24 · 03-19-2019, 01:19 PM

Quote:

Originally Posted by otay

N55? How many miles please?

27,400ish I think. And yes, N55 with no prior issues.

khj24 · 03-19-2019, 01:22 PM

Quote:

Originally Posted by 328dX

ahh yeah i guess that's good then that it's not on his dime haha

Yea I wouldnt be going to the dealer without a warranty lol. The circumstances are a bit weird with 4 being replaced, when I did some reading on the forums I found that most people with injector issues got around 3 replaced by the dealer.

Heres the snip from the invoice. I would guess this wouldve been around 1500-2000 w/o warranty...

27427 27427 FUEL INJECTORS FUEL INJECTORS CONNECTED BATTERY CHARGER AND RAN SHORT TEST. FOUND FAULTS FOR
FUEL PRESSURE AND MISFIRE(11A002, 140001). REMOVED COILS AND PLUGS FOR MISFIRE CYLINDERS 2,3,5,6. FOUND THAT
REMOVED PLUGS ARE SOAKED WITH FUEL UPON REMOVAL. REMOVED SPARK PLUGS FOR CYLINDER 1 AND 4. FOUND SPARK
PLUGS TO ALSO BE FOULED. DRAINED AND OFF AND TEST FUEL COMPOSITION TO ENSURE FUEL ADDED IS GOOD. FUEL TEST IS
WITHIN SPEC. REMOVED INJECTORS FOR MISFIRING CYLINDERS. FOUND THAT THE INJECTORS FOR CYLINDER 2,3,5,6 ARE LEAKING.
REPLACED INJECTORS FOR CYLINDER 2,3,5,6 AND ALL 6 SPARK PLUGS. TEST DROVE VEHICLE AND RAN SHORT TEST. FAULT NO
LONGER PRESENT

Blubaron79 · 03-19-2019, 05:51 PM

Never heard it the N55 injectors leaking. The N54 with the more complicated objectors had the issue and even a recall.

khj24 · 03-20-2019, 04:21 PM

Quote:

Originally Posted by Blubaron79

Never heard it the N55 injectors leaking. The N54 with the more complicated objectors had the issue and even a recall.

There are a few people out there with similar stories, just have to look a lot harder than you would for the N54 lol

03-14-2019, 10:39 PM	#1
khj24 Lieutenant 221 Rep 445 Posts Drives: 2015 m235i Join Date: Apr 2018 Location: 713 iTrader: (3)	UPDATE 3/18/19: Drivetrain malfunction and limp home mode I was driving around 40 mph and I see a drivetrain malfunction pop up and then the car starts running terribly. I read the codes and it comes back as misfire on cyl 6 and low fuel pressure bank 1. I disconnected and reconnected the battery which didn't help. There's an obvious fuel smell and it actually comes out the exhaust when I ran it(because no combustion). The whole car sputters and shakes with an RPM that's all over the place. Anybody share a similar experience? Coil packs? Plugs? Maybe bad battery? It's off to the dealer tomorrow, just curious if someone can relate. Thanks! 3/18/19- 4 leaking injectors replaced and 6 new plugs later shes back. Car runs perfectly, stressful few days but I am glad it all came out okay. Also looks like they did away with the $50 CPO copay as my invoice came up as N/C. Last edited by khj24; 03-18-2019 at 03:41 PM..
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03-14-2019, 10:45 PM	#2
328iX David 786 Rep 2,009 Posts Drives: 2015 328iX F31 Join Date: Nov 2018 Location: Temecula, CA iTrader: (0)	Fuel pressure regulator? That would cause the low fuel pressure code, but also can cause an over fueling? that's my guess.. you could try swapping coils and see if the misfire moves between cylinders
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03-14-2019, 10:46 PM	#3
obert Brigadier General 1781 Rep 4,456 Posts Drives: 2013 328i Join Date: Oct 2011 Location: Seattle Wa iTrader: (49)	Bad fuel pump of timing chain issues. At least these are the things I have been reading on here lately when it comes to limp mode drive train malfunction. There was a dead battery that had some of your issues but just the ruff running but no codes of fuel smell.
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03-14-2019, 11:05 PM	#5
RMachuca3d Captain 724 Rep 943 Posts Drives: F30 328i Msport Join Date: Aug 2018 Location: WA iTrader: (2) Garage List 2015 BMW 328i Mspor ... [0.00]	If its an injector malfunction and is putting in too much gas it can water down the oil lubrication and cause cylinder wall damage, be careful.
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03-14-2019, 11:15 PM	#7
khj24 Lieutenant 221 Rep 445 Posts Drives: 2015 m235i Join Date: Apr 2018 Location: 713 iTrader: (3)	Also I remember seeing a thread about putting the car into neutral without turning it on and going underneath. Does anybody have a link or know how to do this? If not can you turn it off while in neutral and have it stay there?
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03-18-2019, 04:10 PM	#9
bloodline129 Second Lieutenant 97 Rep 259 Posts Drives: BMW 435i xdrive Join Date: Jan 2019 Location: Surrey, BC iTrader: (0)	Awesome news man!!! Glad u got her back
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03-19-2019, 09:20 AM	#10
XxThe_RemedyXx Colonel 967 Rep 2,655 Posts Drives: 2016 340i xDrive Join Date: Aug 2009 Location: Westchester, NY iTrader: (0)	Had some bad injectors myself. Watch out for another CEL. If you get one chances are your CAT got soaked with fuel and is damaged. Happened to me... __________________ 2016 340i xDrive - BM3 Stage 2 93 OTS - xHP Transmission Tune Stage 2 - B58TU HPFP - Bilstein B14 - VRSF Catless DP - Kyostar CAI
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03-19-2019, 10:33 AM	#12
otay Major 826 Rep 1,342 Posts Drives: 2015 335i Join Date: Aug 2014 Location: Raleigh, NC iTrader: (0)	N55? How many miles please?
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03-19-2019, 10:44 AM	#13
328iX David 786 Rep 2,009 Posts Drives: 2015 328iX F31 Join Date: Nov 2018 Location: Temecula, CA iTrader: (0)	Highly, highly, doubt you had 4 faulty injectors simultaneously, you got milked hard
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03-19-2019, 05:51 PM	#18
Blubaron79 Brigadier General 1435 Rep 4,724 Posts Drives: 2021 M340i xDrive Join Date: May 2009 Location: PA iTrader: (0)	Never heard it the N55 injectors leaking. The N54 with the more complicated objectors had the issue and even a recall. __________________ Current: 2021 M340i xDrive Previous: '18 340i xDrive; '15 335 xDrive; '14 435i xDrive; '09 335 E92 xDrive
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