Driveshaft "Knocking" - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 01-02-2006, 08:57 PM   #1
Newb
 
scottc66's Avatar
 
Join Date: Aug 2005
Location: Brandon, MS
Posts: 4
Driveshaft "Knocking"

Hey guys, i wonder if anyone has run into this problem. I recently had a JB Super Short SYE installed in my TJ along with a Tom Wood Custom Driveshaft. The work was performed at a reputable drivetrain service center. While the modification cured my vibration problem, now I have a rather annoying "knocking" noise coming from the transfer case area. Don't notice it at higher speeds, only around 5- 15 MPH. It seems to be in the drivetrain. Is this normal with the Wood's driveshaft due to the "double" joint in it? Any suggestions would be appreciated!

__________________
'02 TJ, 3.5" RE Superflex Suspension Lift w/ Rancho 9000 shocks, RE Adj. Upper and Lower Arms, JKS Disconnects, 1" Teraflex Body Lift, 4.56's, JB Super Short SYE, Tom Wood Custom Driveshaft, Big Daddy Tie Rod, 33" Nitto Terra Grapplers, 16x8 Mickey Thompson Classic Locks
scottc66 is offline   Quote Quick Reply
Old 01-03-2006, 08:34 AM   #2
IITYWTMWYBMAB

WF Supporting Member
::WF Administrator::
 
4Jeepn's Avatar
 
Join Date: Apr 2005
Location: Florence, KY
Posts: 10,123
Images: 5
I have the TW shaft but with the non super short SYE.. No vibs or knocking. I would call the shop and let them know something is not right.. Could be a bad or mis-installed u-joint, or maybe even something in the SYE.

__________________
79.96.85.00.01.97.00.97.93.97.95.94
CJ.XJ.CJ. TJ. TJ.ZJ. TJ.TJ. ZJ.ZJ.YJ. XJ
4Jeepn is offline   Quote Quick Reply
Old 01-03-2006, 04:42 PM   #3
Jack Lives Here!!!

WF Supporting Member
 
1BLKJP's Avatar
 
Join Date: Apr 2005
Location: Phoenix, AZ
Posts: 7,764
Yup, take it back and make them drive it. Since they installed it then they are responsible for it. Don't however let it go. Dshaft problems can cause you a multitude of drivetrain problems is not properly diagnosed and taken care of.
__________________
Thanks,
Jack Hickman

President - Arizona Off-Highway Vehicle Coalition
Vice-President - ASA4WDC
Arizona Rock Rats
1BLKJP is offline   Quote Quick Reply
Old 01-03-2006, 05:50 PM   #4
WF Graphics Bitch
 
JeepCrawler98's Avatar
 
Join Date: Apr 2005
Location: Tucson, AZ
Posts: 544
Send a message via AIM to JeepCrawler98
Have the tranny mount checked - I used to have the same symptoms you described (esp. when wheeling) and that's what it was. Does the shifter jump around when it does it?
__________________
//1998 Jeep TJ {'4\"', 'TFLX LAT', 'AA HD SYE', 'HF 8000Lb', 'LockRight', 'Armor', 'Body mods', 'Misc Mods' = 'true' };
JeepCrawler98 is offline   Quote Quick Reply
Old 01-03-2006, 06:11 PM   #5
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 32,018
Images: 2
Quote:
Originally Posted by JeepCrawler98
Have the tranny mount checked - I used to have the same symptoms you described (esp. when wheeling) and that's what it was. Does the shifter jump around when it does it?
That would be my guess too. I'm not sure why but my tranny mount broke a short while after I installed my SYE kit. Once replaced, it has been fine for nearly 100K miles.
__________________
Remember that having a different opinion doesn't also require one to be a jerk when expressing it.

When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 01-03-2006, 06:47 PM   #6
Jack Lives Here!!!

WF Supporting Member
 
1BLKJP's Avatar
 
Join Date: Apr 2005
Location: Phoenix, AZ
Posts: 7,764
Quote:
Originally Posted by Jerry Bransford
That would be my guess too. I'm not sure why but my tranny mount broke a short while after I installed my SYE kit. Once replaced, it has been fine for nearly 100K miles.
You know what Jerry, same thing happened to mine. Put the poly mount in and had no more problems with that. My Dshaft issues have come from bad angle and a bad rebuild plus doin 80 on I-10 when the CV let loose and sent a massive shockwave up my drivetrain cracking both the Tranny case and the Tcase.
__________________
Thanks,
Jack Hickman

President - Arizona Off-Highway Vehicle Coalition
Vice-President - ASA4WDC
Arizona Rock Rats
1BLKJP is offline   Quote Quick Reply
Old 01-03-2006, 07:02 PM   #7
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 32,018
Images: 2
Quote:
Originally Posted by 1BLKJP
You know what Jerry, same thing happened to mine.
I'm thinking the problem might be from when tightening the lower four t-case mounting nuts, that the tranny mount itself might not be at its natural unstressed fore & aft position.

You know how the tranny mount lower mounting studs protrude through slots in the t-case skidplate? Maybe the Jeep needs to be driven a short distance or jumped up and down on so the tranny mount studs gets positioned fore and aft within those slots before the nuts are tightened. If the nuts are tightened when the mount is a little too far fore or aft, that might be how it breaks. Just a thought.
__________________
Remember that having a different opinion doesn't also require one to be a jerk when expressing it.

When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 01-03-2006, 09:26 PM   #8
Newb
 
scottc66's Avatar
 
Join Date: Aug 2005
Location: Brandon, MS
Posts: 4
Thanks guys for the great input. I'll take her back and keep you posted!
__________________
'02 TJ, 3.5" RE Superflex Suspension Lift w/ Rancho 9000 shocks, RE Adj. Upper and Lower Arms, JKS Disconnects, 1" Teraflex Body Lift, 4.56's, JB Super Short SYE, Tom Wood Custom Driveshaft, Big Daddy Tie Rod, 33" Nitto Terra Grapplers, 16x8 Mickey Thompson Classic Locks
scottc66 is offline   Quote Quick Reply
Old 01-03-2006, 09:28 PM   #9
Newb
 
scottc66's Avatar
 
Join Date: Aug 2005
Location: Brandon, MS
Posts: 4
Quote:
Originally Posted by JeepCrawler98
Have the tranny mount checked - I used to have the same symptoms you described (esp. when wheeling) and that's what it was. Does the shifter jump around when it does it?
Don't notice any shifter jump.
__________________
'02 TJ, 3.5" RE Superflex Suspension Lift w/ Rancho 9000 shocks, RE Adj. Upper and Lower Arms, JKS Disconnects, 1" Teraflex Body Lift, 4.56's, JB Super Short SYE, Tom Wood Custom Driveshaft, Big Daddy Tie Rod, 33" Nitto Terra Grapplers, 16x8 Mickey Thompson Classic Locks
scottc66 is offline   Quote Quick Reply
Old 01-15-2006, 03:30 PM   #10
Jeeper
 
04moneypit's Avatar
 
Join Date: Jan 2006
Location: Under the hood of the jeep from hell (not mine)
Posts: 529
Did the same install on my '04 with the jb conversions kit, and had a similar problem. Is it the d shaft yoke hitting each other? I fixed all noise and vibrations by cutting and lengthening my upper control arms on the rear end so that the lower U-joint was pointing directly at the t-case (read: 0 degrees). says you're supposed to do it with the tom woods driveshaft, didn't think it would make that much difference, but the rotated housing fixed all my problems.
04moneypit is offline   Quote Quick Reply
Old 01-26-2006, 07:45 PM   #11
Newb
 
scottc66's Avatar
 
Join Date: Aug 2005
Location: Brandon, MS
Posts: 4
K guys here's an update. Took my baby back to the drivetrain shop. Been there 2 weeks. They have tried everything. (I even took them a copy of this thread!) Pulled the SYE apart and rechecked, moved the rear driveshaft angle to 0, disconnected the front driveshaft, disconnected the rear driveshaft and adjusted, adjusted and adjusted! Problem is still there. Can only really hear it when coming to a stop, about 10mph to stop. They called Tom Woods and this was their suggestion: Reinstall the transfer case drop that it had originally when the body lift was added! My question is this: What is the whole purpose of the SYE and and new driveshaft if I gotta keep the transfer case drop? I mean this thing only has a 3.5" RE suspension lift and a 1" body lift! I that you should be able to go higher without this problem! Thanks for all the input!
__________________
'02 TJ, 3.5" RE Superflex Suspension Lift w/ Rancho 9000 shocks, RE Adj. Upper and Lower Arms, JKS Disconnects, 1" Teraflex Body Lift, 4.56's, JB Super Short SYE, Tom Wood Custom Driveshaft, Big Daddy Tie Rod, 33" Nitto Terra Grapplers, 16x8 Mickey Thompson Classic Locks
scottc66 is offline   Quote Quick Reply
Old 01-26-2006, 08:25 PM   #12
Jeeper
 
amerijeep's Avatar
 
Join Date: Apr 2005
Location: Mississippi.
Posts: 3,951
Hey. I see you are in Brandon. I'm over there all the time. A few times a week for the job. I live over in Vicksburg.
__________________
To all who serve, Thank You.
amerijeep is offline   Quote Quick Reply
Old 01-27-2006, 12:10 PM   #13
Jack Lives Here!!!

WF Supporting Member
 
1BLKJP's Avatar
 
Join Date: Apr 2005
Location: Phoenix, AZ
Posts: 7,764
Okay I'm just throwing this out there as a possibility. Do you all think that his shaft could be too long? And it's bottoming out on itself when he is braking?

__________________
Thanks,
Jack Hickman

President - Arizona Off-Highway Vehicle Coalition
Vice-President - ASA4WDC
Arizona Rock Rats
1BLKJP is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear CV Driveshaft Alternatives ??? nicolas-eric TJ Tech Forum 8 10-14-2008 01:08 PM
Rear Driveshaft Options ? nicolas-eric TJ General Discussion Forum 4 09-15-2008 05:57 AM
Greasing a cv Style Driveshaft strohm YJ Tech Forum 6 04-14-2008 05:26 PM
Rear Driveshaft length? lowridinpontiac TJ Tech Forum 1 03-04-2008 07:02 PM
Front Driveshaft Rubbing nicolas-eric TJ Tech Forum 16 12-02-2007 08:44 PM



» Featured Product

All times are GMT -5. The time now is 07:55 PM.



Jeep, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC