Cold start stalling, 35i

jkwhar · 09-11-2021, 02:37 PM

Hey all,
So I've been having this issue randomly where it would stall on cold start. Start it back up and its fine. It only does it when the engine is cold. Now it seems like it does it every cold start. Anyone else have this issue?

'14 x35i, 92k miles, stock.

VWAudi2BMW · 09-11-2021, 02:41 PM

Any codes? Have you done plugs and coils? How about carbon buildup, ever looked at the intake valves or had media blasting? Not the only things, but the usual first suspects. Also high pressure fuel pump..

jkwhar · 09-11-2021, 02:45 PM

Quote:

Originally Posted by VWAudi2BMW

Any codes? Have you done plugs and coils? How about carbon buildup, ever looked at the intake valves or had media blasting? Not the only things, but the usual first suspects. Also high pressure fuel pump..

I did the plugs about 25k miles ago. Coil's are original. I didnt think the carbon buildup on the n55 were as bad as the n54's from what read awhile back. The car doesn't struggle or take longer to start so I ruled out HPFP for now. I'll have to take a video on the next cold start.

VWAudi2BMW · 09-11-2021, 02:48 PM

Quote:

Originally Posted by jkwhar

I did the plugs about 25k miles ago. Coil's are original. I didnt think the carbon buildup on the n55 were as bad as the n54's from what read awhile back. The car doesn't struggle or take longer to start so I ruled out HPFP for now. I'll have to take a video on the next cold start.

At your mileage carbon buildup can be a thing on any DI motor, really. Depends upon how it is driven and maintained how bad, how soon. Does it shutter, etc. or just die?

VWAudi2BMW · 09-11-2021, 02:50 PM

If all is fine and it literally just dies, mass air flow sensor should be checked too.

VWAudi2BMW · 09-11-2021, 02:53 PM

low pressure fuel pump / filter ever been changed? Just throwing things out that can make it die after a start, but it would be easier to go down the list and rule things out.

Vdesai0326 · 09-11-2021, 04:59 PM

What's your current ilevel?
When was the last time the car was programmed

randrews15 · 09-12-2021, 07:45 AM

What work has been done lately? I've heard transmissions with issues or needing adaptations run can do this. Lots a factors need to be eliminated first. I'd also be curious to look at the duty cycle of the fuel pump as well.

P1 · 09-12-2021, 01:49 PM

Not unusual. Ended up being a faulty injector in mine. Got it replaced and all has been fine since.

ooshnoo · 09-12-2021, 04:56 PM

MAF sensor and throttle body cleaned????

jkwhar · 02-09-2022, 06:14 PM

Quick update, took it to the dealer and they updated the software. Its been a few weeks and no stalls. Crossing fingers.

lht5059 · 02-09-2022, 07:09 PM

Quote:

Originally Posted by jkwhar

Quick update, took it to the dealer and they updated the software. Its been a few weeks and no stalls. Crossing fingers.

Did they give you any additional info on this? By software, I'm assuming they essentially refreshed everything?

F15_SGM · 02-09-2022, 08:30 PM

Must be a temp solution. If it's a real issue then the issue will soon return. Do you think a weak battery can also be a factor?

firstbimmer · 02-09-2022, 10:29 PM

I had exact same issue for almost a year...engine would stall out and die on various cold starts. Worst was when i was skiing and car would barely start or stay on. For a while the dealer said no problem, then i left it for days so they could reproduce the issue. Once they acknowledged the issue, dealer said software would fix problem, which sounded silly to me. But they did a software update and I've had zero issues and no stalling in about 8 months since.

I have extended warranty so they could have fixed anything and it would have been covered, so they had no incentive to not fix something if broken. I assumed I'd be back when the cold start idle shut down occurred again, but here i am, many months later and issue is gone. Ive been skiing a bunch since December and not one issue in the cold this winter.

firstbimmer · 02-09-2022, 10:32 PM

Sorry...forgot to include...2015 35i xdrive...90k miles now but problem started around 70k.

tlow98 · 02-09-2022, 11:51 PM

Quote:

Originally Posted by firstbimmer

Sorry...forgot to include...2015 35i xdrive...90k miles now but problem started around 70k.

Would it also sometimes just studder and not stall completely?

Ours did this for a few weeks then it just stopped doing it. I’ve never seen it stall tho. I was thinking either software or injectors.

firstbimmer · 02-10-2022, 12:47 AM

Yes...sometimes shudder...sometimes stall. Mostly shuddering in beginning. Stalls happened more towards end (before fix), but it was also colder months at that time. Would've put money on something physical needing replacement, but software update fixed it. Only downside was i lost all my coding and had to spend time recoding everything.

jkwhar · 02-10-2022, 08:02 AM

I paid a diag fee at the dealer and they said that the software was too old and had to update the car first before they can diag any further. I guess after the update, they let the car sit for a few extra days and the car didn't stall. Paid a little under $600 and no stall so far.

tlow98 · 02-10-2022, 10:27 AM

They aren’t giving away these software update huh!?

Thanks for the update, both of you. Looks like this is prolly in my future.

jkwhar · 02-10-2022, 10:36 AM

Quote:

Originally Posted by tlow98

They aren’t giving away these software update huh!?

Thanks for the update, both of you. Looks like this is prolly in my future.

If you're under warranty, they would cover the update but I'm out of warranty lol.

tlow98 · 02-10-2022, 11:30 AM

Quote:

Originally Posted by jkwhar

If you're under warranty, they would cover the update but I'm out of warranty lol.

Irún def out if warranty with a 2014… I am the warranty

sukhk527 · 02-10-2022, 12:19 PM

Start with a software update and go from there. Injector failure isn't uncommon at that mileage.

09-11-2021, 02:37 PM	#1
jkwhar Captain 172 Rep 740 Posts Drives: F30 328i Xdrive \| F15 x35i Join Date: Jun 2016 Location: Central NJ iTrader: (7)	Cold start stalling, 35i Hey all, So I've been having this issue randomly where it would stall on cold start. Start it back up and its fine. It only does it when the engine is cold. Now it seems like it does it every cold start. Anyone else have this issue? '14 x35i, 92k miles, stock. __________________ Did my post help? Click "Appreciate!" FOR SALE! Sport line Steering wheel with heated, paddle shifter, vibration motor, no airbag \| EDM Bi-Xenon adaptive headlights (SOLD) \| surround view retrofit kit (sold) \| KAFAS2 camera and ECU \| FLA camera(sold) \| 6WB cluster (SOLD)
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09-11-2021, 02:41 PM	#2
VWAudi2BMW Second Lieutenant 133 Rep 252 Posts Drives: drei BMWs Join Date: Jun 2019 Location: West Coast iTrader: (0)	Any codes? Have you done plugs and coils? How about carbon buildup, ever looked at the intake valves or had media blasting? Not the only things, but the usual first suspects. Also high pressure fuel pump.. __________________ My current BMW vehicles: SUV Convertible Sedan Lots of burbles and POPS
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09-11-2021, 02:50 PM	#5
VWAudi2BMW Second Lieutenant 133 Rep 252 Posts Drives: drei BMWs Join Date: Jun 2019 Location: West Coast iTrader: (0)	If all is fine and it literally just dies, mass air flow sensor should be checked too. __________________ My current BMW vehicles: SUV Convertible Sedan Lots of burbles and POPS
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09-11-2021, 02:53 PM	#6
VWAudi2BMW Second Lieutenant 133 Rep 252 Posts Drives: drei BMWs Join Date: Jun 2019 Location: West Coast iTrader: (0)	low pressure fuel pump / filter ever been changed? Just throwing things out that can make it die after a start, but it would be easier to go down the list and rule things out. __________________ My current BMW vehicles: SUV Convertible Sedan Lots of burbles and POPS Last edited by VWAudi2BMW; 09-11-2021 at 03:09 PM..
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09-11-2021, 04:59 PM	#7
Vdesai0326 Private First Class 32 Rep 178 Posts Drives: BMW X5 Join Date: Apr 2020 Location: Clifton,NJ iTrader: (0) Garage List 2015 bmw x5 [0.00]	What's your current ilevel? When was the last time the car was programmed
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		BMW X5 and X6 Forum (F15/F16) > BMW X5 (F15) and BMW X6 (F16) Forum > BMW X5 and X6 (F15/F16) Forum
Cold start stalling, 35i

09-12-2021, 07:45 AM	#8
randrews15 Lieutenant 289 Rep 553 Posts Drives: 2012 E93 M3 Le Mans Blue Join Date: Nov 2012 Location: Parrish, FL iTrader: (1)	What work has been done lately? I've heard transmissions with issues or needing adaptations run can do this. Lots a factors need to be eliminated first. I'd also be curious to look at the duty cycle of the fuel pump as well.
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09-12-2021, 01:49 PM	#9
P1 Lieutenant General 11572 Rep 11,136 Posts Drives: 2004 3/4 ton Duramax Join Date: Aug 2007 Location: United States iTrader: (1)	Not unusual. Ended up being a faulty injector in mine. Got it replaced and all has been fine since.
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09-12-2021, 04:56 PM	#10
ooshnoo Lieutenant Colonel 878 Rep 1,687 Posts Drives: 2014 428i and 2018 X5 Join Date: Mar 2017 Location: Buford, GA iTrader: (0) Garage List 2018 BMW X5 [0.00] 2014 BMW 428i [10.00]	MAF sensor and throttle body cleaned???? __________________ ___________________ 2014 F32 428i M-Sport 2018 F15 M-Sport
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02-09-2022, 06:14 PM	#11
jkwhar Captain 172 Rep 740 Posts Drives: F30 328i Xdrive \| F15 x35i Join Date: Jun 2016 Location: Central NJ iTrader: (7)	Quick update, took it to the dealer and they updated the software. Its been a few weeks and no stalls. Crossing fingers. __________________ Did my post help? Click "Appreciate!" FOR SALE! Sport line Steering wheel with heated, paddle shifter, vibration motor, no airbag \| EDM Bi-Xenon adaptive headlights (SOLD) \| surround view retrofit kit (sold) \| KAFAS2 camera and ECU \| FLA camera(sold) \| 6WB cluster (SOLD)
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02-09-2022, 08:30 PM	#13
F15_SGM Insta~ f10_sapphire 158 Rep 412 Posts Drives: BLACK 2015 528I Join Date: Sep 2016 Location: N/a iTrader: (0)	Must be a temp solution. If it's a real issue then the issue will soon return. Do you think a weak battery can also be a factor? __________________ Insta ~ f10_shapphire
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02-09-2022, 10:29 PM	#14
firstbimmer First Lieutenant 134 Rep 305 Posts Drives: '13 e92 M3 & '15 f15 X5 35i x Join Date: Jul 2006 Location: bay area iTrader: (0)	I had exact same issue for almost a year...engine would stall out and die on various cold starts. Worst was when i was skiing and car would barely start or stay on. For a while the dealer said no problem, then i left it for days so they could reproduce the issue. Once they acknowledged the issue, dealer said software would fix problem, which sounded silly to me. But they did a software update and I've had zero issues and no stalling in about 8 months since. I have extended warranty so they could have fixed anything and it would have been covered, so they had no incentive to not fix something if broken. I assumed I'd be back when the cold start idle shut down occurred again, but here i am, many months later and issue is gone. Ive been skiing a bunch since December and not one issue in the cold this winter.
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02-09-2022, 10:32 PM	#15
firstbimmer First Lieutenant 134 Rep 305 Posts Drives: '13 e92 M3 & '15 f15 X5 35i x Join Date: Jul 2006 Location: bay area iTrader: (0)	Sorry...forgot to include...2015 35i xdrive...90k miles now but problem started around 70k.
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02-10-2022, 12:47 AM	#17
firstbimmer First Lieutenant 134 Rep 305 Posts Drives: '13 e92 M3 & '15 f15 X5 35i x Join Date: Jul 2006 Location: bay area iTrader: (0)	Yes...sometimes shudder...sometimes stall. Mostly shuddering in beginning. Stalls happened more towards end (before fix), but it was also colder months at that time. Would've put money on something physical needing replacement, but software update fixed it. Only downside was i lost all my coding and had to spend time recoding everything.
	Appreciate 0 Quote

02-10-2022, 08:02 AM	#18
jkwhar Captain 172 Rep 740 Posts Drives: F30 328i Xdrive \| F15 x35i Join Date: Jun 2016 Location: Central NJ iTrader: (7)	I paid a diag fee at the dealer and they said that the software was too old and had to update the car first before they can diag any further. I guess after the update, they let the car sit for a few extra days and the car didn't stall. Paid a little under $600 and no stall so far. __________________ Did my post help? Click "Appreciate!" FOR SALE! Sport line Steering wheel with heated, paddle shifter, vibration motor, no airbag \| EDM Bi-Xenon adaptive headlights (SOLD) \| surround view retrofit kit (sold) \| KAFAS2 camera and ECU \| FLA camera(sold) \| 6WB cluster (SOLD)
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02-10-2022, 10:27 AM	#19
tlow98 Major General 2188 Rep 5,002 Posts Drives: 2009 E91, 2014 F15 x35i Join Date: Aug 2011 Location: Bay Area iTrader: (2)	They aren’t giving away these software update huh!? Thanks for the update, both of you. Looks like this is prolly in my future.
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02-10-2022, 12:19 PM	#22
sukhk527 Captain 2168 Rep 807 Posts Drives: BMW X5 XDrive35i Join Date: Dec 2020 Location: Chicago, IL iTrader: (0) Garage List 2017 BMW X5 XDrive35i [10.00]	Start with a software update and go from there. Injector failure isn't uncommon at that mileage. __________________ 2017 X5 XDrive35i X-Line \| Sophisto Grey \| MHD Full Flexfuel Tuned \| Mosselman Turbo\| Sutphin Tuning TCU \| Nostrum Stage 2 HPFP \| ER Charge Pipe \| BimmerHausPerformance Intake and Inlet \| ApexBuilt Catted DP \| VRSF FMIC \| Zeitronix Flexfuel Kit \| KateCool Oil Cooler \| Variant Wheels \| Conti DWS06+ \|
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