N55 Rough Idle / Stall on Cold start

grizz311 · 11-18-2014, 03:34 PM

Ever since this cold weather, my car has had some trouble when starting up. A week ago when it was semi chilly, it would turn over then the RPMs would go up and down like the car was stalling for 10 seconds, then go to normal. This morning when it was super cold, it turned over then just died automatically, i had to keep giving it gas for 10 seconds or so, then it was alright. Any idea what this might be? JB4 related?
2012 N55 AT with Alpina Flash
Intake, CP, DP, JB4

335e92tx · 11-26-2014, 09:45 AM

Mileage? Sounds like my problem (even though yours is an n55).

See update to thread - http://www.e90post.com/forums/showthread.php?t=1055298

grizz311 · 11-26-2014, 09:58 AM

31K
I replugged the actuator wires in the trunk "golf tee mod"
and the car is starting fine now. Although it hasn't been super cold recently to test it out.

Johnny Boost · 11-26-2014, 10:13 AM

Are you still on the original HPFP?

11-18-2014, 03:34 PM	#1
grizz311 Captain Rus 46 Rep 348 Posts Drives: 2012 335i coupe Join Date: Sep 2013 Location: Atlanta iTrader: (2)	N55 Rough Idle / Stall on Cold start Ever since this cold weather, my car has had some trouble when starting up. A week ago when it was semi chilly, it would turn over then the RPMs would go up and down like the car was stalling for 10 seconds, then go to normal. This morning when it was super cold, it turned over then just died automatically, i had to keep giving it gas for 10 seconds or so, then it was alright. Any idea what this might be? JB4 related? 2012 N55 AT with Alpina Flash Intake, CP, DP, JB4 Last edited by grizz311; 11-18-2014 at 03:43 PM..
	Appreciate 0 Tweet Quote

11-26-2014, 09:45 AM	#2
335e92tx ahat 1036 Rep 2,592 Posts Drives: Was '07-335e92 - Now '13-335IS Join Date: Mar 2008 Location: Texas iTrader: (6)	Mileage? Sounds like my problem (even though yours is an n55). See update to thread - http://www.e90post.com/forums/showthread.php?t=1055298 __________________ '13 335IS N54 (1 of 373 LeMans Blue out of 3597 total production e92)- Grey interior (1 of 24 in LMB with any trans- 1 of 14 with DCT)-MODS -MFactory LSD/MHD-BQ custom Tune/ATM-IC/AFE Momentum GT Intake/Konis/Mfront&HeimJoint Rear rods&arms/Brembos. https://photos.app.goo.gl/Lo6aHZRo7XqtPkhL8
	Appreciate 0 Quote

11-26-2014, 09:58 AM	#3
grizz311 Captain Rus 46 Rep 348 Posts Drives: 2012 335i coupe Join Date: Sep 2013 Location: Atlanta iTrader: (2)	31K I replugged the actuator wires in the trunk "golf tee mod" and the car is starting fine now. Although it hasn't been super cold recently to test it out.
	Appreciate 0 Quote

11-26-2014, 10:13 AM	#4
Johnny Boost Colonel 324 Rep 2,014 Posts Drives: '21 M850i GC Join Date: May 2013 Location: TBD iTrader: (0)	Are you still on the original HPFP? __________________ WedgePerformance E40 MHD \| Performance Exhaust Mod \| BMS DP \| Vibrant 1790 \| BMS Intake \| VRSF CP \| xHP Stage 3 Michelin PSS \| M3 Control Arms LUX v4 LEDs \| Shadowline Grills \| Lip Spoiler
	Appreciate 0 Quote