Jerky/Wavy acceleration 328i

randyc · 06-02-2017, 09:32 AM

I've been having this slight hesitation/jerk/wave like feeling when i accelerate hard and the RPM goes up above 3500-4000rpm

It feels pretty subtle, like if i relax my head, it goes back and forth. I plugged in my laptop and ran ISTA and left it on while i made a few hard runs around town and the misfiring counter did not clock in any misfire.

FYI spark plugs are new. just replaced them last week.

Could it be the ignition coils if there is no misfire registered in the ISTA/D ? Any ideas

jkwhar · 06-29-2017, 08:16 AM

I have pretty similar experience except its when I'm cursing on highway speed and light throttle just to keep cruising speed I have that jerky/wave like feel. I just did my spark plugs and that wasn't it, currently at 58k. I was wondering the coil packs too but it wont be anytime soon when I'll have the chance to swap them out.

Hobie18 · 07-07-2017, 12:47 AM

I think you'll see a misfire code if it's the coil packs.
My Mazdaspeed6 acted the same way just prior to the high pressure fuel pump failing.

QUiKSR20 · 08-03-2017, 11:56 PM

I think I have experienced a similar issue, Mine almost feels like the driveshaft is moving around or a slight flutter... Is that what you guys are feeling? Way to soon for a failed GUIBO I would thinkg ( 2013 w/75k miles )

06-02-2017, 09:32 AM	#1
randyc Private 14 Rep 57 Posts Drives: F30 328i MSport Join Date: Feb 2016 Location: Malaysia iTrader: (0)	Jerky/Wavy acceleration 328i I've been having this slight hesitation/jerk/wave like feeling when i accelerate hard and the RPM goes up above 3500-4000rpm It feels pretty subtle, like if i relax my head, it goes back and forth. I plugged in my laptop and ran ISTA and left it on while i made a few hard runs around town and the misfiring counter did not clock in any misfire. FYI spark plugs are new. just replaced them last week. Could it be the ignition coils if there is no misfire registered in the ISTA/D ? Any ideas
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06-29-2017, 08:16 AM	#2
jkwhar Captain 172 Rep 740 Posts Drives: F30 328i Xdrive \| F15 x35i Join Date: Jun 2016 Location: Central NJ iTrader: (7)	I have pretty similar experience except its when I'm cursing on highway speed and light throttle just to keep cruising speed I have that jerky/wave like feel. I just did my spark plugs and that wasn't it, currently at 58k. I was wondering the coil packs too but it wont be anytime soon when I'll have the chance to swap them out. __________________ Did my post help? Click "Appreciate!" FOR SALE! Sport line Steering wheel with heated, paddle shifter, vibration motor, no airbag \| EDM Bi-Xenon adaptive headlights (SOLD) \| surround view retrofit kit (sold) \| KAFAS2 camera and ECU \| FLA camera(sold) \| 6WB cluster (SOLD)
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07-07-2017, 12:47 AM	#3
Hobie18 New Member 0 Rep 27 Posts Drives: 2013 328ix Join Date: Nov 2015 Location: Southern CT iTrader: (0)	I think you'll see a misfire code if it's the coil packs. My Mazdaspeed6 acted the same way just prior to the high pressure fuel pump failing.
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08-03-2017, 11:56 PM	#4
QUiKSR20 Major 362 Rep 1,407 Posts Drives: 13' F30 328i 6MT Join Date: Mar 2012 Location: NJ iTrader: (17) Garage List 2013 BMW 328i Sport [10.00] 92 Sentra SE-R Turb ... [0.00]	I think I have experienced a similar issue, Mine almost feels like the driveshaft is moving around or a slight flutter... Is that what you guys are feeling? Way to soon for a failed GUIBO I would thinkg ( 2013 w/75k miles ) __________________ '13 F30 328i Sport 6MT \| '18 G01 X3 xDrive30i \| '95 E36 325i Vert 5MT 92 Sentra SE-R SR20DET DET Build Thread 89 E30 325is [sold & missed]
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