N53 EGR

Dormermike · 08-25-2016, 06:48 PM

Hi

I have a weird random stutter which happens when the engine is under low load around 2200rpm. For example top gear cruising 75 ish on the flat.

It feels like a misfire.

I've seen diesel owners complain of something similar and it turns out to be EGR.

My question is do any other n53 owners get this and does anyone know if the EGR could be causing it.

Engine runs fine pulls like a train etc so is running fine. Just annoying little misfire. Had new injectors plugs etc recently BTW. In suspect it's normal.

Thanks
Mike

Phil325i · 08-26-2016, 06:57 AM

Mike this sort of fault could be one of many things including: coils; vanos solenoids; MAF or MAP sensors: EGR valve etc etc. You need to get any fault codes read and/or a check with diagnostic software, otherwise it's just guesswork (and very expensive guesswork at that!).

frenchi · 08-26-2016, 07:35 AM

Coils most probably or hpfp - low pressure fuel sensor.

Dormermike · 08-26-2016, 08:19 AM

No codes last time I checked. Am on holiday at moment with car so can't check codes.

Is an occasional misfire normal while under no load? I'm talking VERY infrequent. Can be felt by passenger though when it does happen.

Idle is rock solid.

Agree codes is normal way to diagnose but I get the feeling this is somewhat normal.

frenchi · 08-27-2016, 04:09 AM

Mine was doing the same on highway with cruise control last year without any code and problem was Bosch coils that was 2 years old...i replaced them with latest Delphi part and that solved the problem.

08-25-2016, 06:48 PM	#1
Dormermike Captain 104 Rep 674 Posts Drives: Bmw f10 Join Date: Dec 2015 Location: Uk iTrader: (0)	N53 EGR Hi I have a weird random stutter which happens when the engine is under low load around 2200rpm. For example top gear cruising 75 ish on the flat. It feels like a misfire. I've seen diesel owners complain of something similar and it turns out to be EGR. My question is do any other n53 owners get this and does anyone know if the EGR could be causing it. Engine runs fine pulls like a train etc so is running fine. Just annoying little misfire. Had new injectors plugs etc recently BTW. In suspect it's normal. Thanks Mike
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08-26-2016, 06:57 AM	#2
Phil325i Brigadier General 639 Rep 3,212 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	Mike this sort of fault could be one of many things including: coils; vanos solenoids; MAF or MAP sensors: EGR valve etc etc. You need to get any fault codes read and/or a check with diagnostic software, otherwise it's just guesswork (and very expensive guesswork at that!). __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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08-26-2016, 07:35 AM	#3
frenchi Lieutenant 92 Rep 452 Posts Drives: F30 340i M Performance Join Date: Nov 2008 Location: France iTrader: (11)	Coils most probably or hpfp - low pressure fuel sensor.
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08-26-2016, 08:19 AM	#4
Dormermike Captain 104 Rep 674 Posts Drives: Bmw f10 Join Date: Dec 2015 Location: Uk iTrader: (0)	No codes last time I checked. Am on holiday at moment with car so can't check codes. Is an occasional misfire normal while under no load? I'm talking VERY infrequent. Can be felt by passenger though when it does happen. Idle is rock solid. Agree codes is normal way to diagnose but I get the feeling this is somewhat normal.
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08-27-2016, 04:09 AM	#5
frenchi Lieutenant 92 Rep 452 Posts Drives: F30 340i M Performance Join Date: Nov 2008 Location: France iTrader: (11)	Mine was doing the same on highway with cruise control last year without any code and problem was Bosch coils that was 2 years old...i replaced them with latest Delphi part and that solved the problem.
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