2nd Gear Stutter / Hard Pulls

Segments · 02-08-2015, 12:27 PM

Ok, so recently I've noticed my 2nd gear does not like to get up to around 4k RPM. The car feels as if its holding back itself when I try to push the RPM's. Obviously , my car was not cold, almost optimal temp. I've had plugs changed within last 10k miles, a walnut blast done within past 2 months, among other things (oil filter housing gasket , etc.) . I'm still having this problem. If I rev it out, it feels as if it doesn't want to go any further, and Im not going to push it; I usually then upshift and at times get a very hard response, or pull. If you guys have any recommendations on what else I should change, please let me know. As the sig says, it is running a few mod's but obviously I shouldn't be having this problem. Thanks a lot. (PS Will hopefully post a video tonight illustrating the issue)
- Dan

Solo_M_Tech · 02-08-2015, 12:31 PM

Does it only do it in second gear?

Segments · 02-08-2015, 12:38 PM

Quote:

Originally Posted by HooningB2G

Does it only do it in second gear?

Seems most common in 2nd gear, never really experienced it any where else, I'll give it a try later today, but at the moment, 2nd is the issue.

houtan · 02-08-2015, 01:23 PM

Traction control off when it happens? If not, could it be the dsc kicking in?

Segments · 02-08-2015, 01:53 PM

Quote:

Originally Posted by houtan

Traction control off when it happens? If not, could it be the dsc kicking in?

DTC is never touched in my car. Maybe the video will give you guys a better idea. Will be posting it shortly.

Adam135 · 02-08-2015, 02:48 PM

Do you have the original fuel injectors?

Segments · 02-08-2015, 03:33 PM

Yes, I don't believe the prev. owner had them replaced. But to be honest with you guys, this might have been a case of me just being dumb. I honestly think me being too cautious caused me to believe there was a problem. With my foot steadily down on pedal, its a smooth transition to at least 5800 RPM (didn't go any further). I think my foot wasn't far down enough on the pedal; causing the car to feel as if its being held back. I guess since I'm not all about the speed and simply the look, I haven't dove in deep enough to discover these kinds of things. I will post a video of the pull I did from about 10mph rolling to upwards of 85-90. You guys let me know if there doesn't seem to be a problem.

Miko226 · 02-08-2015, 05:24 PM

Check the belt tensioner and idler pulley

Solo_M_Tech · 02-08-2015, 11:06 PM

This is almost impossible to diagnose. Take it too the dealer for servicing.

02-08-2015, 12:27 PM	#1
Segments Aspiring 1'er 78 Rep 534 Posts Drives: 2008 BSM 135i Join Date: May 2014 Location: Long Island, NY iTrader: (0)	2nd Gear Stutter / Hard Pulls Ok, so recently I've noticed my 2nd gear does not like to get up to around 4k RPM. The car feels as if its holding back itself when I try to push the RPM's. Obviously , my car was not cold, almost optimal temp. I've had plugs changed within last 10k miles, a walnut blast done within past 2 months, among other things (oil filter housing gasket , etc.) . I'm still having this problem. If I rev it out, it feels as if it doesn't want to go any further, and Im not going to push it; I usually then upshift and at times get a very hard response, or pull. If you guys have any recommendations on what else I should change, please let me know. As the sig says, it is running a few mod's but obviously I shouldn't be having this problem. Thanks a lot. (PS Will hopefully post a video tonight illustrating the issue) - Dan
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02-08-2015, 12:31 PM	#2
Solo_M_Tech Brigadier General 1688 Rep 3,140 Posts Drives: 2014 M5 6MT Join Date: Nov 2013 Location: Massachusetts iTrader: (7) Garage List 2014 BMW M5 [0.00]	Does it only do it in second gear? __________________ 2014 M5 6MT
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02-08-2015, 01:23 PM	#4
houtan Colonel 706 Rep 2,446 Posts Drives: 2011 135i Join Date: Jun 2013 Location: socal iTrader: (17) Garage List 2011 135i [9.80]	Traction control off when it happens? If not, could it be the dsc kicking in? __________________ 2011 LMB 135i DCT Pure Turbos Stage 3 (PS3) dyno results for N55 Pure Turbos N55 Stage 2 (PS2) results, reviews, install tips and docs, pictures, etc
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02-08-2015, 02:48 PM	#6
Adam135 Captain 72 Rep 961 Posts Drives: 2014 435i Join Date: Oct 2011 Location: USA iTrader: (2)	Do you have the original fuel injectors?
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02-08-2015, 03:33 PM	#7
Segments Aspiring 1'er 78 Rep 534 Posts Drives: 2008 BSM 135i Join Date: May 2014 Location: Long Island, NY iTrader: (0)	Yes, I don't believe the prev. owner had them replaced. But to be honest with you guys, this might have been a case of me just being dumb. I honestly think me being too cautious caused me to believe there was a problem. With my foot steadily down on pedal, its a smooth transition to at least 5800 RPM (didn't go any further). I think my foot wasn't far down enough on the pedal; causing the car to feel as if its being held back. I guess since I'm not all about the speed and simply the look, I haven't dove in deep enough to discover these kinds of things. I will post a video of the pull I did from about 10mph rolling to upwards of 85-90. You guys let me know if there doesn't seem to be a problem.
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02-08-2015, 05:24 PM	#8
Miko226 Captain 61 Rep 722 Posts Drives: 11' 335d Join Date: Nov 2012 Location: Boca Raton, FL iTrader: (0)	Check the belt tensioner and idler pulley __________________ 11' m57 335d 165k Miles - JR 2, ATM Full Exhaust & Intake, Wagner FMIC, AAR Boost Pipe, AAR Swirl Delete, AAR EGR Delete 08' n54 135i FBO E85 - SOLD
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02-08-2015, 11:06 PM	#9
Solo_M_Tech Brigadier General 1688 Rep 3,140 Posts Drives: 2014 M5 6MT Join Date: Nov 2013 Location: Massachusetts iTrader: (7) Garage List 2014 BMW M5 [0.00]	This is almost impossible to diagnose. Take it too the dealer for servicing.
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