Erratic Idle

WickedBMW · 05-09-2018, 02:39 PM

Im not sure if there’s another tread on this issue, but if anyone can advise on this it would be greatly appreciated. This just started recently during a cold start where idle would stutter and then jump to higher RPMs than norm. Could it be dirty MAFs that’s causing this issue? Thanks

New2MPerformance · 05-09-2018, 03:08 PM

Maybe not at all relevant but I experienced the same once at a cold start and then after 15 mins of driving the car suggested an engine oil top at my earliest. So did so and then it was fine....and been fine ever since....

New2MPerformance · 05-09-2018, 03:24 PM

Oil top up....

MpowerMike · 05-09-2018, 08:59 PM

Check the mafs I cleaned mine and put back oem air boxes and it went away

WickedBMW · 05-09-2018, 09:38 PM

Quote:

Originally Posted by New2MPerformance

Oil top up....

Check oil readings, and it reads max

WickedBMW · 05-09-2018, 09:39 PM

Quote:

Originally Posted by MpowerMike

Check the mafs I cleaned mine and put back oem air boxes and it went away

Which CAI were you using?

induc916 · 01-29-2019, 12:53 PM

Bringing this thread back to life, i'm having this issue now after installing project gamma intakes

WickedBMW · 01-29-2019, 02:02 PM

Quote:

Originally Posted by induc916

Bringing this thread back to life, i'm having this issue now after installing project gamma intakes

ECU maybe able to adopt to new air system. How long did you have them on?

induc916 · 01-29-2019, 02:37 PM

it does adapt after driving but on startup it doesn't either way i'm hoping when it goes off to DME for custom dyno tune they'll get it sorted out there on the dyno.

WickedBMW · 01-29-2019, 11:18 PM

Quote:

Originally Posted by induc916

it does adapt after driving but on startup it doesn't either way i'm hoping when it goes off to DME for custom dyno tune they'll get it sorted out there on the dyno.

If it’s during idling it could be your timing chain. My car had this issue, but once it was replaced by BMW it was all good.

Reemas Dreemas · 01-30-2019, 11:21 AM

its not always the mafs... remember that the our injectors are bad on these cars. i say look at the injectors

Yay-Z · 01-31-2019, 07:05 PM

They changed out my MAF and swapped my battery. It went away. I think it was the MAF sensor

05-09-2018, 02:39 PM	#1
WickedBMW Major 613 Rep 1,124 Posts Drives: 2021 BMW M3 MT Join Date: Sep 2014 Location: BIMMERPOST.com iTrader: (5)	Erratic Idle Im not sure if there’s another tread on this issue, but if anyone can advise on this it would be greatly appreciated. This just started recently during a cold start where idle would stutter and then jump to higher RPMs than norm. Could it be dirty MAFs that’s causing this issue? Thanks
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05-09-2018, 03:08 PM	#2
New2MPerformance New Member 2 Rep 12 Posts Drives: F10 '15 Join Date: Oct 2017 Location: Cambridgeshire, UK iTrader: (0)	Maybe not at all relevant but I experienced the same once at a cold start and then after 15 mins of driving the car suggested an engine oil top at my earliest. So did so and then it was fine....and been fine ever since....
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05-09-2018, 03:24 PM	#3
New2MPerformance New Member 2 Rep 12 Posts Drives: F10 '15 Join Date: Oct 2017 Location: Cambridgeshire, UK iTrader: (0)	Oil top up....
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05-09-2018, 08:59 PM	#4
MpowerMike Major 360 Rep 1,123 Posts Drives: 2012 IB BMW M5 Join Date: May 2014 Location: T.O. Canada iTrader: (1)	Check the mafs I cleaned mine and put back oem air boxes and it went away
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01-29-2019, 12:53 PM	#7
induc916 Second Lieutenant 116 Rep 248 Posts Drives: 2014 M6 Join Date: Mar 2018 Location: Indiana iTrader: (0)	Bringing this thread back to life, i'm having this issue now after installing project gamma intakes __________________ 14 M6 Sakhir Coupe \| RK Autowerks Built Motor \| G25-660 \| Snow Performance Meth \| RK DP \| 4mm bored throttle bodies \| SSP-X \| SSP Trans Pan \| RK Billet Diff Mount \| DSS Axles \| Rkautowerks carbon charge pipes \| CSF Intercoolers \|Akro exhaust \| Gapped Plugs \|RK intakes \| 900whp/930wtq
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01-29-2019, 02:37 PM	#9
induc916 Second Lieutenant 116 Rep 248 Posts Drives: 2014 M6 Join Date: Mar 2018 Location: Indiana iTrader: (0)	it does adapt after driving but on startup it doesn't either way i'm hoping when it goes off to DME for custom dyno tune they'll get it sorted out there on the dyno. __________________ 14 M6 Sakhir Coupe \| RK Autowerks Built Motor \| G25-660 \| Snow Performance Meth \| RK DP \| 4mm bored throttle bodies \| SSP-X \| SSP Trans Pan \| RK Billet Diff Mount \| DSS Axles \| Rkautowerks carbon charge pipes \| CSF Intercoolers \|Akro exhaust \| Gapped Plugs \|RK intakes \| 900whp/930wtq
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01-30-2019, 11:21 AM	#11
Reemas Dreemas Private 11 Rep 77 Posts Drives: NICE Join Date: Jul 2016 Location: Gotham iTrader: (1)	its not always the mafs... remember that the our injectors are bad on these cars. i say look at the injectors
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01-31-2019, 07:05 PM	#12
Yay-Z Shifting to Top Gear 40 Rep 556 Posts Drives: F10 M5/E70 X5 Join Date: Mar 2010 Location: Houston, TX iTrader: (0)	They changed out my MAF and swapped my battery. It went away. I think it was the MAF sensor __________________ 2015 F10 M5 CP 2013 E70 X5
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