Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Noticing Vibration Uner Acceleration

Thread Tools
 
Search this Thread
 
Old Jun 15, 2010 | 11:18 PM
  #1  
darknezz's Avatar
Thread Starter
Senior Member
 
Joined: Mar 2010
Posts: 812
Likes: 1
From: Eugene, OR
Year: 1989
Model: Cherokee
Engine: 4.7 Stroker I6
Default Noticing Vibration Under Acceleration

So I'm not sure if its always been their, but I seem to be noticing it more now for some reason. While accelerating there is a vibration, let go of the gas and its nice and smooth.

I know my motor mounts are shot and thats coming real soon, but is this something else? Its not lifted or anything as I know vibration can come from lifts without a sye or t-case drop.

I'm wondering if its anything major cause I'm about to drive 300 miles to cali and back, this jeep has been a almost DD driver though and has been fine. Should it be ok?

Last edited by darknezz; Jun 15, 2010 at 11:25 PM.
Reply
Old Jun 16, 2010 | 12:04 AM
  #2  
darknezz's Avatar
Thread Starter
Senior Member
 
Joined: Mar 2010
Posts: 812
Likes: 1
From: Eugene, OR
Year: 1989
Model: Cherokee
Engine: 4.7 Stroker I6
Default

im thinking like u joints and stuff like that... anyone? just motor mounts mby? I just drove again and it really does seem like its gotten worse recently...
Reply
Old Jun 16, 2010 | 12:10 AM
  #3  
Russian's Avatar
Member
 
Joined: Jul 2008
Posts: 222
Likes: 0
From: Daytona Beach, Fl
Year: 1988
Model: Cherokee
Engine: 4.0
Default

for motor mounts pop open your hood and start it up. than hit the gas and inspect the mounts and pay attention to the amount of shift they have
Reply
Old Jun 16, 2010 | 12:19 AM
  #4  
darknezz's Avatar
Thread Starter
Senior Member
 
Joined: Mar 2010
Posts: 812
Likes: 1
From: Eugene, OR
Year: 1989
Model: Cherokee
Engine: 4.7 Stroker I6
Default

I already said my motor mounts are shot lol, their cracked and yes the engine twists with reving, but just wondering if thats all thats causeing my vibration or something else, and if its unsafe to drive along road trip.
Reply
Old Jun 16, 2010 | 10:08 AM
  #5  
kriebz's Avatar
Junior Member
 
Joined: Dec 2009
Posts: 52
Likes: 0
From: Bethlehem, PA
Year: 2001
Model: Cherokee
Engine: 4.0
Default

Accelerating pushes the pinion up a bit. It could be your DS u-joints, which are cheap and easy to replace. Overall, make sure your rear suspension isn't totally worn out somewhere. With a stock u-joint shaft, the rear pinion should be pointed just above level, parallel with the t-case output; blocks with a taper or lift shackles might cause the angle to be too high.
Reply
Old Jun 16, 2010 | 11:12 AM
  #6  
fishtaconc's Avatar
CF Veteran
 
Joined: Mar 2009
Posts: 1,208
Likes: 1
From: Watha,NC
Year: Jeepless at the moment
Default

Im thinking DS Ujoints, also wouldnt hurt to check slip yoke at the tcase and lube it.
Reply
Old Jun 20, 2010 | 10:07 PM
  #7  
darknezz's Avatar
Thread Starter
Senior Member
 
Joined: Mar 2010
Posts: 812
Likes: 1
From: Eugene, OR
Year: 1989
Model: Cherokee
Engine: 4.7 Stroker I6
Default

well im down in cali and this didnt cause any problems yet, although I had an over heating problem... thread on that in a second. my rear suspension IS totally worn out, and I DID notice the vibration more right when I had a bunch of camping stuff loaded up in the back. I was also under the car and rocked the wheels back and fourth and noticed alot of slop in the DS ujoint. So I think its a combination of the things... Ill be getting a new DS ujoint soon as I have seen them break before and its not pretty.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
lgrant
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
Jul 5, 2022 12:19 AM
DWStiles
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
Sep 18, 2015 06:10 AM
ryan_lerv
Cherokee Chat
6
Sep 9, 2015 09:12 AM
SouthSeaPirate
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
17
Sep 7, 2015 06:47 PM
MidwestNick
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
Sep 4, 2015 01:48 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 08:49 AM.