Cold start up issue ( attached video )

alcuin · 01-13-2020, 01:58 PM

hello ,

I have a random issue ( it doesn't happen each cold start up ).

when hot , start up is normal.

Car: 2104 435i N55

Issue: sometimes it seems engine is going to stall when starting up.

Codes: no codes found.

outside temp : 4ºC to 18ºC

other symptoms: none.

car has 89000km and the only mod done is an ER charge pipe.

video:

https://gofile.io/?c=Q8DmHY

at 4s is when idle goes down and ECU wants to correct it.

any ideas?

many thanks.

JaredG_F30 · 01-13-2020, 02:25 PM

Are you tuned?

alcuin · 01-13-2020, 02:56 PM

Car is stock

Munchi435i · 01-13-2020, 03:12 PM

Quote:

Originally Posted by alcuin

Car is stock

How old is your battery?

I also have a 2014 435i and during this past "cold" months we had in FL I experienced longer delays to start up and once I replaced the battery all was right again!

alcuin · 01-16-2020, 06:31 AM

Quote:

Originally Posted by Munchi435i

How old is your battery?

I also have a 2014 435i and during this past "cold" months we had in FL I experienced longer delays to start up and once I replaced the battery all was right again!

Hello,

My battery is 5.5 years old.

in my case it is not a delay when starting up, it is like it is going to stall.

will keep a look at the battery.

is there any way to know how much charge can it hold now?

Tpriest7893 · 01-16-2020, 07:37 AM

I'm located in Florida so our winter deft wasn't as cold as Yours LOL. BUT, on a few very cold morning when the temp was 40-50 my car started up very weird. Only on those day's. After the cold passed by my car was fine. My battery is a year old. My intake inlet just recently cracked so it makes me wonder if they inlet was on its way out and was already causing issues before hand. As well as sometimes when I would drive I would almost get like a knock or hesitation on WOT.
Again not sure if this is it, but does make me wonder if they were some how linked

XxThe_RemedyXx · 01-16-2020, 11:21 AM

Check you EKP module and make sure it's in good working order.

Jeff@TopGearSolutions · 01-16-2020, 02:56 PM

Quote:

Originally Posted by alcuin

Hello,

My battery is 5.5 years old.

in my case it is not a delay when starting up, it is like it is going to stall.

will keep a look at the battery.

is there any way to know how much charge can it hold now?

If the battery is weak on startup, like it's struggling to crank that would be indicative of a bad battery and time for a replacement. Some auto stores have courtesy batter testers, you could also just buy your own for a nominal fee. I'm not 100% convinced your problem is the battery. With a stock vehicle, there are many things it can actually be. It could be spark plugs, fuel pump, injectors or something else to name few.

alcuin · 01-17-2020, 03:43 AM

thanks for the answers.

will look if some codes appear...

battery checked with bimmerlink and shows 80% charged.

spark plugs were changed 27.000km ago.

biglefty · 01-24-2020, 03:13 PM

I had the same issue and mentioned it at the dealer before I had some Dinan work done on my 435. The said it just needed a software update, haven't had an issue since.

01-13-2020, 01:58 PM	#1
alcuin New Member 5 Rep 12 Posts Drives: 435i Join Date: Jan 2020 Location: unknown iTrader: (0)	Cold start up issue ( attached video ) hello , I have a random issue ( it doesn't happen each cold start up ). when hot , start up is normal. Car: 2104 435i N55 Issue: sometimes it seems engine is going to stall when starting up. Codes: no codes found. outside temp : 4ºC to 18ºC other symptoms: none. car has 89000km and the only mod done is an ER charge pipe. video: https://gofile.io/?c=Q8DmHY at 4s is when idle goes down and ECU wants to correct it. any ideas? many thanks.
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01-13-2020, 02:25 PM	#2
JaredG_F30 Lieutenant Colonel 1106 Rep 1,499 Posts Drives: 2014 335i, M-Sport, Manual Join Date: Dec 2016 Location: Raleigh, NC iTrader: (0)	Are you tuned? __________________ 2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq on Cali 91oct before WMI). SPI Films Blog/DIY Vids
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01-13-2020, 02:56 PM	#3
alcuin New Member 5 Rep 12 Posts Drives: 435i Join Date: Jan 2020 Location: unknown iTrader: (0)	Car is stock
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01-16-2020, 07:37 AM	#6
Tpriest7893 Captain 215 Rep 819 Posts Drives: Bmw 335i f30 N55 ( sold) Join Date: Nov 2017 Location: Venice Florida iTrader: (0) Garage List [0.00] 2012 bmw 335 [0.00] 02 2002 m3 Vert [0.00]	I'm located in Florida so our winter deft wasn't as cold as Yours LOL. BUT, on a few very cold morning when the temp was 40-50 my car started up very weird. Only on those day's. After the cold passed by my car was fine. My battery is a year old. My intake inlet just recently cracked so it makes me wonder if they inlet was on its way out and was already causing issues before hand. As well as sometimes when I would drive I would almost get like a knock or hesitation on WOT. Again not sure if this is it, but does make me wonder if they were some how linked __________________ 2012 bmw 335i sedan VRSF catless DP VRSF 5? HD IC Stock intake(had open before and was sick of noise) BMS CP 550i 351m rims with 275/245 set up. No tune as of yet.
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01-16-2020, 11:21 AM	#7
XxThe_RemedyXx Colonel 967 Rep 2,653 Posts Drives: 2016 340i xDrive Join Date: Aug 2009 Location: Westchester, NY iTrader: (0)	Check you EKP module and make sure it's in good working order. __________________ 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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01-17-2020, 03:43 AM	#9
alcuin New Member 5 Rep 12 Posts Drives: 435i Join Date: Jan 2020 Location: unknown iTrader: (0)	thanks for the answers. will look if some codes appear... battery checked with bimmerlink and shows 80% charged. spark plugs were changed 27.000km ago.
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01-24-2020, 03:13 PM	#10
biglefty Registered 0 Rep 1 Posts Drives: BMW 435i Join Date: Jan 2020 Location: San Diego iTrader: (0)	I had the same issue and mentioned it at the dealer before I had some Dinan work done on my 435. The said it just needed a software update, haven't had an issue since.
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