shudder while accelerating with DSC OFF...

Z4-VILLA · 05-31-2011, 12:30 AM

ive got 57k on it right now.

while at the bear mountain run this sunday I began noticing shuddering and knocking type sounds comming from below me when ever i slammed the gas....sounded like it was comming from below me, i could not tell if it was in the front or the rear. feels something not rotating right. drive shaft? guibo? maybe the recent clutch flywheel oem replacement install was bad? idk...
I enjoy dsc off from light to light in the city but after running her hard around the twisties and staying with that GTR around the corners of Bear mountain area this started comming about. any advice?

Im gonna check if I melted of those poly urethane motor mounts from UUC....
IDK

arggg45 · 05-31-2011, 09:12 AM

Quote:

Originally Posted by Z4-Villalona

ive got 57k on it right now.

while at the bear mountain run this sunday I began noticing shuddering and knocking type sounds comming from below me when ever i slammed the gas....sounded like it was comming from below me, i could not tell if it was in the front or the rear. feels something not rotating right. drive shaft? guibo? maybe the recent clutch flywheel oem replacement install was bad? idk...
I enjoy dsc off from light to light in the city but after running her hard around the twisties and staying with that GTR around the corners of Bear mountain area this started comming about. any advice?

Im gonna check if I melted of those poly urethane motor mounts from UUC....
IDK

Was it constantly making this shuddering noise or was it just when you 'slammed' the gas going around a corner.

Z4-VILLA · 05-31-2011, 09:38 AM

only under hard acceleration with dsc off and you can reall hear if i got wheels turned and im going for it

Z4-VILLA · 06-01-2011, 10:47 AM

can smeone please help?

ZStig · 06-01-2011, 10:55 AM

Doesn't sound like a common problem, thats why you don't see many people helping. Is it doing it with traction control on?

Z4-VILLA · 06-01-2011, 11:01 AM

just hard acceleration dsc on or off....maybe I didnt break the clutch in properly...smdh...its been 500 miles though since clutch and flywheel replacement with oem parts.....idk

ZStig · 06-01-2011, 11:03 AM

Sounds like something a tech would figure out (as long as he's not Russian). lol

Finnegan · 06-01-2011, 11:36 AM

So, only with DSC off? Perhaps some wheel hop or loss of traction? It's curious it doesn't happen with DSC on. Straight line at speed (60 plus) with good traction I'd expect any drivetrain issues to be present with or without DSC on at WOT. At lower speeds, especially in corners or over bumps, it may be some loss of traction.

:

arggg45 · 06-01-2011, 11:40 AM

if its from the rear, it sounds like your diff isn't locking properly, but you could also be causing it by slamming on the gas instead of smoothly rolling into it...

Z4-VILLA · 06-02-2011, 03:22 PM

just got told by mechanic (same shop that did all my mods btw...Motorcepts in Richmond hill, NY) that it is the u- joint at the diff

ZStig · 06-02-2011, 04:34 PM

sounds like a relatively simple fix

Z4-VILLA · 06-02-2011, 06:09 PM

true now to find the hardest u joint available? i have no idea

05-31-2011, 12:30 AM	#1
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	shudder while accelerating with DSC OFF... ive got 57k on it right now. while at the bear mountain run this sunday I began noticing shuddering and knocking type sounds comming from below me when ever i slammed the gas....sounded like it was comming from below me, i could not tell if it was in the front or the rear. feels something not rotating right. drive shaft? guibo? maybe the recent clutch flywheel oem replacement install was bad? idk... I enjoy dsc off from light to light in the city but after running her hard around the twisties and staying with that GTR around the corners of Bear mountain area this started comming about. any advice? Im gonna check if I melted of those poly urethane motor mounts from UUC.... IDK
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05-31-2011, 09:38 AM	#3
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	only under hard acceleration with dsc off and you can reall hear if i got wheels turned and im going for it
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06-01-2011, 10:47 AM	#4
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	can smeone please help?
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06-01-2011, 10:55 AM	#5
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	Doesn't sound like a common problem, thats why you don't see many people helping. Is it doing it with traction control on? __________________
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06-01-2011, 11:01 AM	#6
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	just hard acceleration dsc on or off....maybe I didnt break the clutch in properly...smdh...its been 500 miles though since clutch and flywheel replacement with oem parts.....idk
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06-01-2011, 11:03 AM	#7
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	Sounds like something a tech would figure out (as long as he's not Russian). lol __________________
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06-01-2011, 11:36 AM	#8
Finnegan Dog Listener 701 Rep 7,850 Posts Drives: Z4M/. Z3M, E36/46 M3 Join Date: Oct 2008 Location: Teaching the dog to slalom iTrader: (22)	So, only with DSC off? Perhaps some wheel hop or loss of traction? It's curious it doesn't happen with DSC on. Straight line at speed (60 plus) with good traction I'd expect any drivetrain issues to be present with or without DSC on at WOT. At lower speeds, especially in corners or over bumps, it may be some loss of traction. :
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06-01-2011, 11:40 AM	#9
arggg45 Second Lieutenant 11 Rep 245 Posts Drives: fairly quickly. Join Date: Oct 2010 Location: finding the end of the road iTrader: (0) Garage List * SOLD * 2004 Audi S4 [0.00] * SOLD * 2004 VW R32 [0.00] 1929 Ford Model A & ... [10.00]	if its from the rear, it sounds like your diff isn't locking properly, but you could also be causing it by slamming on the gas instead of smoothly rolling into it... __________________ "It will not have enough power until I can spin the wheels at the end of a long straight in top gear." -Mark Donohue
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06-02-2011, 03:22 PM	#10
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	just got told by mechanic (same shop that did all my mods btw...Motorcepts in Richmond hill, NY) that it is the u- joint at the diff
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06-02-2011, 04:34 PM	#11
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	sounds like a relatively simple fix __________________
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06-02-2011, 06:09 PM	#12
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	true now to find the hardest u joint available? i have no idea
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