N55 Rough Idle / Stall on Cold start

grizz311 · 11-18-2014, 04:59 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

divisionbell77 · 11-19-2014, 08:53 AM

Codes?

Sounds like possible HPFP.

grizz311 · 11-19-2014, 10:24 AM

No Codes,

Tried putting Jb4 into map 0 before starting today, same issue.
Last year didn't have this issue, however last winter I did not have catless downpipe, this is the only new mod I have put on.

Sidewinderpb · 11-19-2014, 10:52 AM

Same exact issue every single morning past winter. Catless DP seems to make the issue worse.

Chris_Rav · 11-19-2014, 11:42 AM

I had issues similar to yours when I had a leak in my charge pipe.. To much air would end up killing the engine

grizz311 · 11-19-2014, 02:24 PM

Quote:

Originally Posted by Chris_Rav

I had issues similar to yours when I had a leak in my charge pipe.. To much air would end up killing the engine

Hmm Ill check that out later today, but how would that relate to cold weather?

Sidewinderpb · 11-19-2014, 03:04 PM

Quote:

Originally Posted by grizz311

Hmm Ill check that out later today, but how would that relate to cold weather?

Perhaps air density

Subaru335i · 11-19-2014, 03:05 PM

Using any E85? That shit doesn't like cold.

grizz311 · 11-19-2014, 03:07 PM

No Meth or E85 as of right now.

nyfg56 · 11-19-2014, 03:18 PM

Mines done the same since I bought it. Don't worry about it

grizz311 · 11-19-2014, 03:23 PM

Quote:

Originally Posted by nyfg56

Mines done the same since I bought it. Don't worry about it

Only when its cold?

nyfg56 · 11-19-2014, 03:24 PM

Quote:

Originally Posted by grizz311

Quote:

Originally Posted by nyfg56

Mines done the same since I bought it. Don't worry about it

Only when its cold?

Yes

divisionbell77 · 11-19-2014, 03:48 PM

That isn't something to 'not worry about.'

I swear there was an earlier issue with catless and JB4. Do a search for that.

grizz311 · 11-19-2014, 03:53 PM

Quote:

Originally Posted by divisionbell77

That isn't something to 'not worry about.'

I swear there was an earlier issue with catless and JB4. Do a search for that.

Thanks, Ill try, I made sure to search pretty thoroughly before making this post.

nyfg56 · 11-19-2014, 04:04 PM

Quote:

Originally Posted by divisionbell77

That isn't something to 'not worry about.'

I swear there was an earlier issue with catless and JB4. Do a search for that.

I've been fine and so have many others. Catless and stock but with that said it could be something. Just seems if it was that big of a deal all of us wouldn't be fine

JETmn · 11-19-2014, 04:24 PM

Quote:

Originally Posted by nyfg56

I've been fine and so have many others. Catless and stock but with that said it could be something. Just seems if it was that big of a deal all of us wouldn't be fine

Common problem and not a problem are very different things...

nyfg56 · 11-19-2014, 04:29 PM

Quote:

Originally Posted by JETmn

Quote:

Originally Posted by nyfg56

I've been fine and so have many others. Catless and stock but with that said it could be something. Just seems if it was that big of a deal all of us wouldn't be fine

Common problem and not a problem are very different things...

I agree. All I'm saying is that no one has found a side affect from this yet. I'd be interested to know why it is since it seems that anyone I've talked to with a 2007+ e90 whether it's a 328,330, or 335 has noticed this mostly stock cars too

JETmn · 11-19-2014, 05:30 PM

Have you had the software update that came out last Dec? That fixed 90% of my idle issues.

11-18-2014, 04:59 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
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11-19-2014, 08:53 AM	#2
divisionbell77 Lieutenant 19 Rep 459 Posts Drives: 2011 335i XDrive Coupe Join Date: Mar 2012 Location: Ohio iTrader: (1)	Codes? Sounds like possible HPFP.
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11-19-2014, 10:24 AM	#3
grizz311 Captain Rus 46 Rep 348 Posts Drives: 2012 335i coupe Join Date: Sep 2013 Location: Atlanta iTrader: (2)	No Codes, Tried putting Jb4 into map 0 before starting today, same issue. Last year didn't have this issue, however last winter I did not have catless downpipe, this is the only new mod I have put on.
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11-19-2014, 10:52 AM	#4
Sidewinderpb Banned 329 Rep 1,739 Posts Drives: 2017 340i xDrive 6mt Join Date: Nov 2013 Location: CT iTrader: (7)	Same exact issue every single morning past winter. Catless DP seems to make the issue worse.
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11-19-2014, 11:42 AM	#5
Chris_Rav Lieutenant 65 Rep 548 Posts Drives: 2011 e92 LCI 335i xdrive 6MT Join Date: Oct 2013 Location: NJ iTrader: (9)	I had issues similar to yours when I had a leak in my charge pipe.. To much air would end up killing the engine __________________ 2011 AW / CR 6MT 335i Xdrive Coupe \| JB4 Stage 2 \| BMS Intake \| Performance Spoiler \| Powder Coated Red Linea Corse 818 \| Blacked Out Roof \| Wrapped Interior Trim
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11-19-2014, 03:05 PM	#8
Subaru335i Private First Class 1 Rep 175 Posts Drives: 2011 335i 6MT Join Date: Mar 2014 Location: Minneapolis iTrader: (0) Garage List 2007 Subaru WRX [0.00] 2011 335i [0.00]	Using any E85? That shit doesn't like cold. __________________ Daily: 2012 CTS-V Sedan 6MT Fun: 2014 Porsche 911 PDK More Fun: 2001 AP1 Honda S2000 White on red Family/Offroad: 2020 Lexus LX 570 w/ 34" tires Sold: 2011 335i 6MT, 2007 WRX Limited - STI swap, TD06-20GXT, E85
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11-19-2014, 03:07 PM	#9
grizz311 Captain Rus 46 Rep 348 Posts Drives: 2012 335i coupe Join Date: Sep 2013 Location: Atlanta iTrader: (2)	No Meth or E85 as of right now.
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11-19-2014, 03:18 PM	#10
nyfg56 Captain 103 Rep 857 Posts Drives: 2010 E90 M3 AW/Fox Red 6MT Join Date: Nov 2013 Location: Albany NY iTrader: (2)	Mines done the same since I bought it. Don't worry about it
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11-19-2014, 03:48 PM	#13
divisionbell77 Lieutenant 19 Rep 459 Posts Drives: 2011 335i XDrive Coupe Join Date: Mar 2012 Location: Ohio iTrader: (1)	That isn't something to 'not worry about.' I swear there was an earlier issue with catless and JB4. Do a search for that.
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11-19-2014, 05:30 PM	#18
JETmn Lieutenant Colonel 247 Rep 1,595 Posts Drives: 2011 335i xDrive Msport Join Date: Apr 2013 Location: Orlando iTrader: (0) Garage List 2011 335Xi [0.00]	Have you had the software update that came out last Dec? That fixed 90% of my idle issues.
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