Go Back   Club Lexus Forums > Lexus Model Forums > IS Models > IS - Third Generation
Sign in using an external account
Register Forgot Password?

Clunk feeling upon acceleration

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 08-22-13, 01:14 AM   #16
UpSideDown
Lead Lap
Trader Score: (0)
 
UpSideDown's Avatar
 
Join Date: Jul 2009
Location: SE
Posts: 581
Default

Have you tried with the traction control turned off yet?
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
UpSideDown is offline   Reply With Quote
Old 08-22-13, 07:16 AM   #17
JLex23
Rookie
Trader Score: (0)
 
Join Date: Aug 2013
Location: IA
Posts: 69
Default

Dropped off the car and we were able to reproduce the thump or clunk under hard acceleration on left turns. They are going to run some scans of the car and also get it up on the rack. Hoping the issue is identified and fixed in short order. I'll keep you guys posted on their findings.
JLex23 is offline   Reply With Quote
Old 08-23-13, 07:58 PM   #18
JLex23
Rookie
Trader Score: (0)
 
Join Date: Aug 2013
Location: IA
Posts: 69
Default

So here's the update guys. Got my car back today and they were able to reproduce the issue with my car and two other IS250 AWD's on the lot. They are unsure of what is causing the clunk/thump underneath the car under moderate to heavy acceleration when making left hand turns from a complete stop. They said they would keep me posted with any updates. 2 hours after I picked up my car I received a call from my SA. He said the head Lexus tech just had received a call from their regional rep in Chicago and he had just reproduced the issue on the car he was driving. The regional rep is escalating this issue for further research. I encourage all of you to try it in your 14 250 AWD's as it is reasonable to assume that this issue is prevalent. If you experience this issue I encourage you to report it to your dealership.
JLex23 is offline   Reply With Quote
Old 08-23-13, 08:02 PM   #19
corradoMR2
Lexus Champion
Trader Score: (0)
 
corradoMR2's Avatar
 
Join Date: Jul 2006
Location: Toronto, Canada
Posts: 3,535
Default

Thanks JLex23.

I have not heard the noise, however, I have been gentle on the throttle. I'll give it half throttle or so on a left turn when I test this tomorrow.
__________________

___________________________________________________________________________
2014 IS250 AWD F-Sport, 2013 RX350 F-Sport, On Order: 2015 NX200t F-Sport
IS Build Thread: http://www.clublexus.com/forums/buil...ng-thread.html
Previous: 2011 CT, 2008 IS AWD, 2007 RXh, 2004 RX
corradoMR2 is online now   Reply With Quote
Old 08-23-13, 08:17 PM   #20
JLex23
Rookie
Trader Score: (0)
 
Join Date: Aug 2013
Location: IA
Posts: 69
Default

No problem. You have to be a bit aggressive with the throttle to have the issue appear. I never get it under normal acceleration. Let me know your findings.
JLex23 is offline   Reply With Quote
Old 08-24-13, 05:21 AM   #21
G8rGirl
Rookie
Trader Score: (0)
 
Join Date: Jul 2013
Location: Florida
Posts: 88
Default

Quote:
Originally Posted by corradoMR2 View Post
Thanks JLex23.

I have not heard the noise, however, I have been gentle on the throttle. I'll give it half throttle or so on a left turn when I test this tomorrow.
No need to be unnecessarily aggressive with your engine while it is still in the break-in period. Be gentle with the USB...some of us live vicariously through you! Haha.
G8rGirl is offline   Reply With Quote
Old 08-24-13, 05:56 AM   #22
JLex23
Rookie
Trader Score: (0)
 
Join Date: Aug 2013
Location: IA
Posts: 69
Default

Haha....actually the manual does not say anything about avoiding higher RPM's during the break in period.
JLex23 is offline   Reply With Quote
Old 08-24-13, 07:26 AM   #23
unc879wins
Driver
Trader Score: (0)
 
Join Date: May 2011
Location: Arizona
Posts: 177
Default

Chevy/GM SA on same issue on one of their models, "Well, stop turning left from a dead stop."
unc879wins is offline   Reply With Quote
Old 08-24-13, 07:48 AM   #24
JLex23
Rookie
Trader Score: (0)
 
Join Date: Aug 2013
Location: IA
Posts: 69
Default

Quote:
Originally Posted by unc879wins View Post
Chevy/GM SA on same issue on one of their models, "Well, stop turning left from a dead stop."
Hahaha....truth
JLex23 is offline   Reply With Quote
Old 08-24-13, 08:27 PM   #25
corradoMR2
Lexus Champion
Trader Score: (0)
 
corradoMR2's Avatar
 
Join Date: Jul 2006
Location: Toronto, Canada
Posts: 3,535
Default

Just an update. I tested it out tonight over a few left turns and no clunk or any noises. I'll keep an eye (ear) out for this over time.

My 3IS build is 07/13, and Canadian-destined.
__________________

___________________________________________________________________________
2014 IS250 AWD F-Sport, 2013 RX350 F-Sport, On Order: 2015 NX200t F-Sport
IS Build Thread: http://www.clublexus.com/forums/buil...ng-thread.html
Previous: 2011 CT, 2008 IS AWD, 2007 RXh, 2004 RX
corradoMR2 is online now   Reply With Quote
Old 08-24-13, 10:55 PM   #26
D&G
Pole Position
Trader Score: (0)
 
D&G's Avatar
 
Join Date: Oct 2005
Location: BC
Posts: 269
Default

That is not normal to hear that noise. Hope Lexus can diagnose the issue and find a fix soon for you.
D&G is offline   Reply With Quote
Old 09-04-13, 07:01 PM   #27
JLex23
Rookie
Trader Score: (0)
 
Join Date: Aug 2013
Location: IA
Posts: 69
Default

No one else experience this yet?? No updates from Lexus as of yet, although I didn't really expect one.
JLex23 is offline   Reply With Quote
Old 09-04-13, 07:18 PM   #28
corradoMR2
Lexus Champion
Trader Score: (0)
 
corradoMR2's Avatar
 
Join Date: Jul 2006
Location: Toronto, Canada
Posts: 3,535
Default

^^^^^ Didn't experience this (yet).
__________________

___________________________________________________________________________
2014 IS250 AWD F-Sport, 2013 RX350 F-Sport, On Order: 2015 NX200t F-Sport
IS Build Thread: http://www.clublexus.com/forums/buil...ng-thread.html
Previous: 2011 CT, 2008 IS AWD, 2007 RXh, 2004 RX
corradoMR2 is online now   Reply With Quote
Old 09-06-13, 10:56 AM   #29
JLex23
Rookie
Trader Score: (0)
 
Join Date: Aug 2013
Location: IA
Posts: 69
Default

Quote:
Originally Posted by corradoMR2 View Post
^^^^^ Didn't experience this (yet).
I just visited with Lexus Corporate and they have confirmed that this issue is impacting the IS250 AWD, but at this time they are deeming it a characteristic of the vehicle but are researching the issue to see if a fix will be implemented in the future. I have driven 2 other IS250's at my dealership and they all exhibit this characteristic under heavy acceleration from a dead stop on left turns. I personally think it is a driveshaft clunk. I encourage all of you to step into that accelerator a bit to reproduce and report it to your dealership
JLex23 is offline   Reply With Quote
Old 11-10-13, 09:49 AM   #30
corradoMR2
Lexus Champion
Trader Score: (0)
 
corradoMR2's Avatar
 
Join Date: Jul 2006
Location: Toronto, Canada
Posts: 3,535
Default

I have now experienced the issue and it is fairly consistent. I noticed it on a left turn at an intersection where I had to accelerate quickly to avoid incoming traffic.

You feel the light clunk under your left foot (left foot rest) more so than you hear it. It does feel like the driveshaft if I were to guess. Seems like Lexus is aware of the issue in the US, but not sure in Canada so at my next servicing, I'll bring it up.

I'll also test a right turn abrupt acceleration with a passenger to see if it's there as well.
__________________

___________________________________________________________________________
2014 IS250 AWD F-Sport, 2013 RX350 F-Sport, On Order: 2015 NX200t F-Sport
IS Build Thread: http://www.clublexus.com/forums/buil...ng-thread.html
Previous: 2011 CT, 2008 IS AWD, 2007 RXh, 2004 RX
corradoMR2 is online now   Reply With Quote
Old 11-10-13, 09:49 AM
 
 
 
 
Reply

Tags
250, 400, acceleration, accelorating, clunk, clunks, engine, hear, jacking, lexus, ls, point, sc400, stop, thud

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
clunking noise ! IS3502014 IS - Third Generation 3 06-16-14 07:15 PM
E-Brake Loud Clunk Noise reyrey127 RX - Third Generation 6 12-15-13 01:38 AM
2005 GX470's: Are you experiencing the Clunk? DSW GX - First Generation 41 05-30-13 05:34 AM
Clunk when braking/accelerating EricB GX - First Generation 2 03-12-13 09:14 AM
SC300 Clunk Noise JJSSC300 Performance & Maintenance 12 09-15-12 06:40 PM

All times are GMT -7. The time now is 02:55 PM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info