335xi Stumbling under acceleration

cyndi335icoupe · 05-06-2012, 08:14 PM

Just purchased with 44k on it, I love it.

First time on highway most noticable accelerating from 60 to 90 it stumbles. It feels like the all wheel drive Astro van I once had. I always felt like the all wheel drive system on the van was fighting it self. Seems to be only in automatic mode, not when using paddles.

Going to the dealer next week just checking to see if anyone has had a similiar issue.

Fun w/N54 · 05-09-2012, 12:11 PM

Mine stumbles as well between 2300 and 3000 rpm during moderate pedal action. So if on highway would be about right speed. I have 6AT and if I get on it it kick's down then no issues.

Have you done your plugs yet...any codes stored?

NightStalker · 05-15-2012, 01:30 PM

It could be your tires, just a thought

AWD Addict · 05-15-2012, 02:50 PM

What year xi, and are you on original plugs and injectors?

giaolong · 05-16-2012, 12:30 AM

Bump for this, i did this tonight on the interstate and massive vibration at the same speed. It feels like the car fighting itself....

Patrick303 · 05-16-2012, 09:29 AM

+1 for AWD Addict's recommendation. Get your injectors and plugs checked. Misfires at that speed will definitely feel like the car stumbling and fighting itself. Might also want to check the fluid in your diff.

Timmayy · 05-16-2012, 09:31 AM

The way the OP describes it the issue is most likely a misfire, especially given the fact that the plugs and coils are known to be problematic on the N54.

Chrisred · 05-16-2012, 11:36 AM

Have same issue as soon as I installed tune. Got weird shaking when tried to press on throttle more then 60%. Car sounded like a Subaru with exhaust with less power. Codes are misfires on 4 5 and 6 cyl. Also on multiple cylinders. Btw i changer sparks like 8 months ago and cyl 2 & 3 injectors and coils

AWD Addict · 05-16-2012, 05:51 PM

This is well documented on these forums. You need new plugs, and if that doesn't fix it, your injectors are likely toast. Depending on the year of your car, there is a TSB for replacing the old injectors out with a newer version at the dealer's cost under warranty.

giaolong · 05-16-2012, 09:35 PM

I will buy new plugs since my car has 51k miles on it.
What about Coils?

Putting the car back to stock tune for now and see if it happens since i think if it doesnt.....i cant get it fix under warranty if it only happens on JB4 Tune.

Chrisred · 05-17-2012, 11:33 AM

If u have tune on the misfires are more apparent. I had slight symptoms and then put tune in and all codes started.

itsmeek · 05-17-2012, 02:08 PM

Sparkplugs, injectors, fuel pump, valve cleaning in that order.

Sam335ix · 05-17-2012, 02:31 PM

I had the same problem with 3rd and 4th gear when I had procede installed... but I only had 4000 miles on the car so your issues are different than mine. gl.

krazyking · 06-01-2012, 09:11 AM

Will the dealer replace injectors under CPO warranty? Not that I think I need to replace mine, but for future reference. Although I've also been experiencing similar symptoms to those of the OP. Will be changing my plugs soon..

cyndi335icoupe · 06-04-2012, 02:48 PM

Thanks to all that reponded. The dealer cleaned the valves in cylinders 4-6 and changed the plugs and the problem went away. I guess they pull the intake manifold and clean from there. Said it was a common problem if the car was driven to easy, (low rpm high load).

Timmayy · 06-05-2012, 07:31 AM

Glad to hear that they took care of it.

BMW_Belgier · 06-07-2012, 05:17 PM

Quote:

Originally Posted by cyndi335icoupe

Thanks to all that reponded. The dealer cleaned the valves in cylinders 4-6 and changed the plugs and the problem went away. I guess they pull the intake manifold and clean from there. Said it was a common problem if the car was driven to easy, (low rpm high load).

What do they mean with "low rpm high load"? Under 1000, 1200, 1400,...

amclint · 06-08-2012, 10:22 AM

Quote:

Originally Posted by BMW_Belgier

What do they mean with "low rpm high load"? Under 1000, 1200, 1400,...

It means you drive around in D all the time or short shift the 6MT, these cars need regular high RPM runs and sustained RPMs to burn off the crap on the valves.

I'm at 55k miles and my valves do not need cleaning, I've run meth for ~10k miles but I drive in DS even on the freeway and my car gets a workout to and from work

giaolong · 06-09-2012, 12:47 AM

Quote:

Originally Posted by mykal335xi

It means you drive around in D all the time or short shift the 6MT, these cars need regular high RPM runs and sustained RPMs to burn off the crap on the valves.

I'm at 55k miles and my valves do not need cleaning, I've run meth for ~10k miles but I drive in DS even on the freeway and my car gets a workout to and from work

Lol, same here....the moment the car warmed up to the Temp....work-out start

Also, i had the same stumble problem (Misfire Cylinder #5) and i changed out to new Spark plugs and the problem went away since then.

michaelalex17 · 06-09-2012, 12:48 AM

injectors

antrot · 06-09-2012, 10:34 AM

I am also experiencing this...
AT 2011 335i xdrive
I picked up my car brand new and after 200 kms the spark plugs were done
Car wouldnt start.. Apparently they were soaked in fuel

So they changed all of my plugs but now im getting this stumble around 1500-2000 rpm, the shifts seem jerky and its AT with 4400 kms
But I do drive it pretty soft

What should I do before bringing to dealer
Also how can I figure out which spark plug i should fix if they are all brand new
Any help??

Slow89irocz · 06-14-2012, 11:24 AM

I am experienceing this as well. I have a stumble when the car is cold if I accelerate mildly at about 2300rpms. Also I have been noticing a bit of surging if I dont let the car warm up after startup and try to drive off. Any ideas?

05-06-2012, 08:14 PM	#1
cyndi335icoupe Registered 2 Rep 2 Posts Drives: 335xicoupe Join Date: May 2012 Location: n.h. iTrader: (0)	335xi Stumbling under acceleration Just purchased with 44k on it, I love it. First time on highway most noticable accelerating from 60 to 90 it stumbles. It feels like the all wheel drive Astro van I once had. I always felt like the all wheel drive system on the van was fighting it self. Seems to be only in automatic mode, not when using paddles. Going to the dealer next week just checking to see if anyone has had a similiar issue.
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05-09-2012, 12:11 PM	#2
Fun w/N54 Lieutenant 39 Rep 592 Posts Drives: '11 E92 335is AW/CR/DCT Join Date: Apr 2011 Location: WI iTrader: (2)	Mine stumbles as well between 2300 and 3000 rpm during moderate pedal action. So if on highway would be about right speed. I have 6AT and if I get on it it kick's down then no issues. Have you done your plugs yet...any codes stored?
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05-15-2012, 01:30 PM	#3
NightStalker ✰ 267 Rep 2,741 Posts Drives: Audi Join Date: Nov 2008 Location: New York City iTrader: (12)	It could be your tires, just a thought
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05-15-2012, 02:50 PM	#4
AWD Addict Chief Executive 300 Rep 2,886 Posts Drives: 2008 335xi 6spd Coupe Join Date: Dec 2007 Location: Boston iTrader: (1) Garage List 2008 335xi [0.00]	What year xi, and are you on original plugs and injectors?
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05-16-2012, 09:29 AM	#6
Patrick303 Lieutenant 675 Rep 474 Posts Drives: F36 440i GC Join Date: Jan 2011 Location: Denver, CO iTrader: (2) Garage List 2017 Ducati Monster ... [0.00] 2017 BMW 440i xDriv ... [0.00]	+1 for AWD Addict's recommendation. Get your injectors and plugs checked. Misfires at that speed will definitely feel like the car stumbling and fighting itself. Might also want to check the fluid in your diff. __________________ 2024 Porsche Taycan 4S 2017 Ducati Monster 821
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05-16-2012, 12:30 AM	#5
giaolong Second Lieutenant 11 Rep 280 Posts Drives: E92 335xi, Genesis, IS300 Join Date: Jan 2012 Location: Virginia Beach, VA iTrader: (2)	Bump for this, i did this tonight on the interstate and massive vibration at the same speed. It feels like the car fighting itself....
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05-16-2012, 09:31 AM	#7
Timmayy Private 0 Rep 50 Posts Drives: 09 E92 335i Blk/Blk xDrive 6MT Join Date: Mar 2012 Location: Seattle iTrader: (0)	The way the OP describes it the issue is most likely a misfire, especially given the fact that the plugs and coils are known to be problematic on the N54.
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05-16-2012, 11:36 AM	#8
Chrisred Captain 63 Rep 788 Posts Drives: BMW 335xi coupe Join Date: Jan 2010 Location: Montreal, Canada iTrader: (0)	Have same issue as soon as I installed tune. Got weird shaking when tried to press on throttle more then 60%. Car sounded like a Subaru with exhaust with less power. Codes are misfires on 4 5 and 6 cyl. Also on multiple cylinders. Btw i changer sparks like 8 months ago and cyl 2 & 3 injectors and coils __________________ JB4 Trebila tuned cp-e IC AMS exhaust BMS DCI AR DP's METH RB TURBO 19" VMR VB3 Stoptech BBK TC KLINE VORSHLAG SPEC STG 3 OSS design
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05-16-2012, 05:51 PM	#9
AWD Addict Chief Executive 300 Rep 2,886 Posts Drives: 2008 335xi 6spd Coupe Join Date: Dec 2007 Location: Boston iTrader: (1) Garage List 2008 335xi [0.00]	This is well documented on these forums. You need new plugs, and if that doesn't fix it, your injectors are likely toast. Depending on the year of your car, there is a TSB for replacing the old injectors out with a newer version at the dealer's cost under warranty.
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05-16-2012, 09:35 PM	#10
giaolong Second Lieutenant 11 Rep 280 Posts Drives: E92 335xi, Genesis, IS300 Join Date: Jan 2012 Location: Virginia Beach, VA iTrader: (2)	I will buy new plugs since my car has 51k miles on it. What about Coils? Putting the car back to stock tune for now and see if it happens since i think if it doesnt.....i cant get it fix under warranty if it only happens on JB4 Tune.
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05-17-2012, 11:33 AM	#11
Chrisred Captain 63 Rep 788 Posts Drives: BMW 335xi coupe Join Date: Jan 2010 Location: Montreal, Canada iTrader: (0)	If u have tune on the misfires are more apparent. I had slight symptoms and then put tune in and all codes started. __________________ JB4 Trebila tuned cp-e IC AMS exhaust BMS DCI AR DP's METH RB TURBO 19" VMR VB3 Stoptech BBK TC KLINE VORSHLAG SPEC STG 3 OSS design
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05-17-2012, 02:08 PM	#12
itsmeek Lieutenant 15 Rep 417 Posts Drives: 2009 E90 335xi Join Date: Mar 2012 Location: DC Metro iTrader: (3)	Sparkplugs, injectors, fuel pump, valve cleaning in that order. __________________ 1997 Supra TT (900ish hp) 2014 BMW 535d 1965 Mustang 302 5 speed! 2010 Prius
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05-17-2012, 02:31 PM	#13
Sam335ix Major 65 Rep 1,274 Posts Drives: 335 ix performance edition Join Date: Sep 2011 Location: Redskin Country iTrader: (0)	I had the same problem with 3rd and 4th gear when I had procede installed... but I only had 4000 miles on the car so your issues are different than mine. gl. __________________ 2011 e90 KW V1, JB4, BMS Dp, BMS Intake, CP, Alpina Flash, ISO, E85 Coming soon to the garage: 2014 M3 Maybe M5
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06-01-2012, 09:11 AM	#14
krazyking Lieutenant 17 Rep 476 Posts Drives: '08 E92 BMW 335Xi Join Date: Jan 2012 Location: Boston, MA iTrader: (3)	Will the dealer replace injectors under CPO warranty? Not that I think I need to replace mine, but for future reference. Although I've also been experiencing similar symptoms to those of the OP. Will be changing my plugs soon.. __________________ '08 E92 335Xi - Premium, Cold and Sports Packages JB4 // AFE DCI // Matte Black Grills // MTEC Angel Eyes // CF Mirror Covers // Forgestar F14's
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06-04-2012, 02:48 PM	#15
cyndi335icoupe Registered 2 Rep 2 Posts Drives: 335xicoupe Join Date: May 2012 Location: n.h. iTrader: (0)	Thanks for the response Thanks to all that reponded. The dealer cleaned the valves in cylinders 4-6 and changed the plugs and the problem went away. I guess they pull the intake manifold and clean from there. Said it was a common problem if the car was driven to easy, (low rpm high load).
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06-05-2012, 07:31 AM	#16
Timmayy Private 0 Rep 50 Posts Drives: 09 E92 335i Blk/Blk xDrive 6MT Join Date: Mar 2012 Location: Seattle iTrader: (0)	Glad to hear that they took care of it.
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06-09-2012, 12:48 AM	#20
michaelalex17 Brigadier General 596 Rep 3,386 Posts Drives: Manual Wagon Join Date: Aug 2010 Location: CT iTrader: (4)	injectors
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06-09-2012, 10:34 AM	#21
antrot Second Lieutenant 17 Rep 231 Posts Drives: 11 335i sedan Join Date: Mar 2009 Location: Toronto/Vaughan iTrader: (0)	I am also experiencing this... AT 2011 335i xdrive I picked up my car brand new and after 200 kms the spark plugs were done Car wouldnt start.. Apparently they were soaked in fuel So they changed all of my plugs but now im getting this stumble around 1500-2000 rpm, the shifts seem jerky and its AT with 4400 kms But I do drive it pretty soft What should I do before bringing to dealer Also how can I figure out which spark plug i should fix if they are all brand new Any help??
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06-14-2012, 11:24 AM	#22
Slow89irocz New Member 3 Rep 28 Posts Drives: 2011 335i xDrive M-Sport Join Date: May 2012 Location: Chicago, Illinois iTrader: (0)	I am experienceing this as well. I have a stumble when the car is cold if I accelerate mildly at about 2300rpms. Also I have been noticing a bit of surging if I dont let the car warm up after startup and try to drive off. Any ideas?
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