99 xj studders on take off. - JeepForum.com
Reply
 
LinkBack Thread Tools
post #1 of 17 Old 12-26-2012, 08:23 PM Thread Starter
Truitt
Registered User
1980 CJ7 
 
Join Date: Sep 2008
Location: denver
Posts: 60
99 xj studders on take off.

I have a 99 xj. With a 4.0 and an automatic. It's lifted about 3inches but no SYE. It shudders when I take off from a stop at full throttle. It doesn't do it if I take off slower. Its a short, slow shudder not a quick vibration. What would cause this? Maybe some sort of torque management, like anti-slip or something? I just got it and everything else seems ok. I just don't know much about Cherokees. I have been a cj fan for a long time.

Truitt is offline  
Sponsored Links
Advertisement
 
post #2 of 17 Old 12-26-2012, 08:35 PM
Project1
Registered User
1998 XJ Cherokee 
 
Join Date: Feb 2010
Location: Florida
Posts: 2,716
Do you have a drag jeep like this one ? Could be wheel hop ... maybe some race slicks??
Attached Thumbnails
P5070023.jpg  

[ ]||||||[ ] ... http://www.jeepforum.com/forum/f11/98-green-xj-daily-driver-build-996260/
Project1 is offline  
post #3 of 17 Old 12-26-2012, 08:37 PM
Project1
Registered User
1998 XJ Cherokee 
 
Join Date: Feb 2010
Location: Florida
Posts: 2,716
Im just kiddin .. do you feel like its an engine prob? getting any codes??


Could just be some wheel hop or maybe a broken motor mount or shackle ... do you get any kind of clicking when you turn? Maybe the best thing is to take a good look at your jeep and see if any looks broken, like any bushings and make sure everything is nice and tight ... low tech before hi tech

[ ]||||||[ ] ... http://www.jeepforum.com/forum/f11/98-green-xj-daily-driver-build-996260/
Project1 is offline  
post #4 of 17 Old 12-26-2012, 08:38 PM Thread Starter
Truitt
Registered User
1980 CJ7 
 
Join Date: Sep 2008
Location: denver
Posts: 60
Nope, I'm kinda proud to say its not quite like that one. But I would be cool if it were making enough power to cause wheel hop!
Truitt is offline  
post #5 of 17 Old 12-26-2012, 08:43 PM
Project1
Registered User
1998 XJ Cherokee 
 
Join Date: Feb 2010
Location: Florida
Posts: 2,716
Quote:
Originally Posted by Truitt View Post
Nope, I'm kinda proud to say its not quite like that one. But I would be cool if it were making enough power to cause wheel hop!
I know that would be awesome... mine will spin out eassssy ( but thats just because my tires suck )

[ ]||||||[ ] ... http://www.jeepforum.com/forum/f11/98-green-xj-daily-driver-build-996260/
Project1 is offline  
post #6 of 17 Old 12-26-2012, 08:44 PM Thread Starter
Truitt
Registered User
1980 CJ7 
 
Join Date: Sep 2008
Location: denver
Posts: 60
I don't really thing is an engine problem. It runs really smooth the whole time. No engine codes at all. I feel like its a drivetrain thing. But it doesn't make sense to me that I doesn't do it all the time or become worse at highway speed.
Truitt is offline  
post #7 of 17 Old 12-26-2012, 08:49 PM
Project1
Registered User
1998 XJ Cherokee 
 
Join Date: Feb 2010
Location: Florida
Posts: 2,716
Quote:
Originally Posted by Truitt View Post
I don't really thing is an engine problem. It runs really smooth the whole time. No engine codes at all. I feel like its a drivetrain thing. But it doesn't make sense to me that I doesn't do it all the time or become worse at highway speed.
Might be something small that shows when you get under some torque. full speed from a stand still puts a lot of stress on everything...

I would check for things that are broken or lose

[ ]||||||[ ] ... http://www.jeepforum.com/forum/f11/98-green-xj-daily-driver-build-996260/
Project1 is offline  
post #8 of 17 Old 12-26-2012, 09:29 PM
sAe23
Registered User
1995 XJ Cherokee 
 
Join Date: Apr 2009
Location: Los Angeles / SFV
Posts: 3,275
Quote:
Originally Posted by Truitt View Post
I don't really thing is an engine problem. It runs really smooth the whole time. No engine codes at all. I feel like its a drivetrain thing. But it doesn't make sense to me that I doesn't do it all the time or become worse at highway speed.
If it only happens when you "punch it", then one might be tempted to suggest that you *don't DO that*!

But, there is probably some hidden issue just waiting to bite you on the butt so, as Project1 suggested, check your motor and transmission mounts. Also look at the condition of your U-joints and bushings.

You say you just bought it WITH a 3" lift installed and no SYE, correct?
Can you tell if there is a T-case drop kit installed?
Chances are your drive line angles are off. MAYBE it's off just enough to only cause vibes under a heavy load

And to verify how much lift you have, measure from the center of the axle to the bottom of the fender flair. Stock is 17.5" front and 17" rear.
sAe23 is offline  
post #9 of 17 Old 12-27-2012, 05:36 AM Thread Starter
Truitt
Registered User
1980 CJ7 
 
Join Date: Sep 2008
Location: denver
Posts: 60
You are correct. I think it is about a 3 inch lift. There's no t case drop. The previous owner cut out the fender wells and installed flares so its really hard for me to tell. The angle of the driveline doesn't look to bad to me. I guess me best bet is to get it inside this weekend and just spend some time crawling around under it. I don't really care much for crawling around in the snow if I don't have to.
Truitt is offline  
post #10 of 17 Old 12-27-2012, 09:14 AM
buildin1XJ
Registered User
1999 XJ Cherokee 
 
Join Date: Oct 2011
Location: Knoxville
Posts: 1,587
Have you checked engine and transmission mounts yet?
buildin1XJ is offline  
post #11 of 17 Old 12-27-2012, 06:05 PM
Project1
Registered User
1998 XJ Cherokee 
 
Join Date: Feb 2010
Location: Florida
Posts: 2,716
Yea workin on your car in the freezing cold sucks .....


And a mount or a bushing is a likely problem ..... But like b....1xj said .....

If it only does it when you do a drag race still launch ..... Well..... Just don't do that .... That's a good tip

[ ]||||||[ ] ... http://www.jeepforum.com/forum/f11/98-green-xj-daily-driver-build-996260/
Project1 is offline  
post #12 of 17 Old 12-27-2012, 06:10 PM
BigByrd47119
Registered User
1998 XJ Cherokee 
 
Join Date: Oct 2012
Location: Detroit
Posts: 153
Sounds like the trans mount.
BigByrd47119 is offline  
post #13 of 17 Old 12-27-2012, 06:10 PM Thread Starter
Truitt
Registered User
1980 CJ7 
 
Join Date: Sep 2008
Location: denver
Posts: 60
I haven't had time to check any of the mounts yet. Spare time is of a rare occurrence around here.
I know that the best way to avoid it is to probably quit doing what causes it in the first place but I just can't help myself. Especially since I just got it.
Truitt is offline  
post #14 of 17 Old 12-27-2012, 06:58 PM
Project1
Registered User
1998 XJ Cherokee 
 
Join Date: Feb 2010
Location: Florida
Posts: 2,716
Quote:
Originally Posted by Truitt View Post
I haven't had time to check any of the mounts yet. Spare time is of a rare occurrence around here.
I know that the best way to avoid it is to probably quit doing what causes it in the first place but I just can't help myself. Especially since I just got it.
I know the feeling .... That's why I don't ride bikes any more and stick to jeeps ....lol...... Because I just can't help hallin @$$ never goes away ...lol

[ ]||||||[ ] ... http://www.jeepforum.com/forum/f11/98-green-xj-daily-driver-build-996260/
Project1 is offline  
post #15 of 17 Old 12-27-2012, 08:02 PM Thread Starter
Truitt
Registered User
1980 CJ7 
 
Join Date: Sep 2008
Location: denver
Posts: 60
Quote:
Originally Posted by Project1 View Post

I know the feeling .... That's why I don't ride bikes any more and stick to jeeps ....lol...... Because I just can't help hallin @$$ never goes away ...lol
It's funny you said that. I actually traded my R6 for the xj.
Truitt is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com 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 e-mail address for yourself.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome