Idle hunting

AndyW · 05-27-2022, 09:41 AM

So, just started getting the occasional idle hunting.

Aware of the breather valve and ICV issues and my 2013 E93 is at 45K. It seems to do it more right after a fill up so I am hoping that means it the breather vice the more expensive ICV. Guess we'll see.

Richneerd · 05-27-2022, 01:44 PM

Quote:

It seems to do it more right after a fill up

I hated chasing down that issue, I got it fixed by throwing money at it.

MAP sensor, oxygen sensors, breather valve, injectors, and fuel filter.

GL!

VtecforV8 · 05-27-2022, 02:13 PM

Breather valve fixed it for two years for me. Seems to have started coming back, but i'm hopeful it was just bad gas....

spammysammich · 05-27-2022, 07:57 PM

The breather valves can go bad again. Also check the low pressure fuel sensor near the left strut tower/firewall area. Previous owner of my car fixed a similar problem with that.

brettcp · 05-28-2022, 10:50 AM

Breather valve is an inexpensive part and not a difficult DIY, perhaps start with that.

AndyW · 05-28-2022, 08:23 PM

Quote:

Originally Posted by brettcp

Breather valve is an inexpensive part and not a difficult DIY, perhaps start with that.

I am.

KawBoy · 05-29-2022, 01:27 PM

Quote:

Originally Posted by Richneerd

I hated chasing down that issue, I got it fixed by throwing money at it.

MAP sensor, oxygen sensors, breather valve, injectors, and fuel filter.

GL!

Fuel filter? I thought there wasn't one. Where is it located?
Thanks!

AndyW · 05-30-2022, 02:16 PM

Maybe it's placebo effect, but the car seems to be idling much smoother in general now after replacing the breather valve and both hoses.

spammysammich · 05-30-2022, 05:00 PM

Quote:

Originally Posted by AndyW

Maybe it's placebo effect, but the car seems to be idling much smoother in general now after replacing the breather valve and both hoses.

The real test is immediately after a full fill up.

AndyW · 05-30-2022, 06:15 PM

Quote:

Originally Posted by spammysammich

The real test is immediately after a full fill up.

That's what started me on replacing it...lol.

05-27-2022, 09:41 AM	#1
AndyW Supreme Galactic Commander (one galaxy over...) 674 Rep 1,778 Posts Drives: '08 E93, '12 E82, '13 E93 M3 Join Date: Feb 2012 Location: Washington, USA iTrader: (5)	Idle hunting So, just started getting the occasional idle hunting. Aware of the breather valve and ICV issues and my 2013 E93 is at 45K. It seems to do it more right after a fill up so I am hoping that means it the breather vice the more expensive ICV. Guess we'll see. __________________ Best, Andy '12 E82-PS2,Stoptechs,Clubsports+M3 bits,Accusump,Wagner DP+EVO III FMIC,ERCP,BMS Intake,Mason Strut Bar,Wedge Tune
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05-27-2022, 02:13 PM	#3
VtecforV8 Private First Class 20 Rep 180 Posts Drives: 2010 E92 M3 6MT Join Date: May 2011 Location: Northern VA iTrader: (0)	Breather valve fixed it for two years for me. Seems to have started coming back, but i'm hopeful it was just bad gas....
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05-27-2022, 07:57 PM	#4
spammysammich Major 1606 Rep 1,128 Posts Drives: 2009 E92 M3 Dakar Yellow II Join Date: Oct 2021 Location: Edmonds, WA iTrader: (0) Garage List 2009 BMW M3 [10.00]	The breather valves can go bad again. Also check the low pressure fuel sensor near the left strut tower/firewall area. Previous owner of my car fixed a similar problem with that.
	Appreciate 1 AndyW673.50 Quote

05-28-2022, 10:50 AM	#5
brettcp Captain 348 Rep 705 Posts Drives: 2012 E93 M3 Join Date: Mar 2011 Location: So Cal iTrader: (2)	Breather valve is an inexpensive part and not a difficult DIY, perhaps start with that.
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05-30-2022, 02:16 PM	#8
AndyW Supreme Galactic Commander (one galaxy over...) 674 Rep 1,778 Posts Drives: '08 E93, '12 E82, '13 E93 M3 Join Date: Feb 2012 Location: Washington, USA iTrader: (5)	Maybe it's placebo effect, but the car seems to be idling much smoother in general now after replacing the breather valve and both hoses. __________________ Best, Andy '12 E82-PS2,Stoptechs,Clubsports+M3 bits,Accusump,Wagner DP+EVO III FMIC,ERCP,BMS Intake,Mason Strut Bar,Wedge Tune
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