Vibration - 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 05-14-2009, 08:50 PM   #1
Jeeper
 
machi814's Avatar
 
Join Date: Feb 2009
Posts: 41
Vibration

My 06' Unlimited has a very noticable vibration when I come to a stop. It vibrates the mirrors to the point that they are useless. It almost feels like it's going to stall sometimes. It also will vary in the strength of the vibration. I wish I could explain it better. It is an auto, with no lift. Any insight?

__________________
06' Unlimited
Stock....for now.
SW Missouri
machi814 is offline   Quote Quick Reply
Old 05-14-2009, 09:13 PM   #2
Drives by Braille

WF Supporting Member
 
AzTJ's Avatar
 
Join Date: Dec 2006
Location: For-8-Oh!
Posts: 13,621
The whole thing shakes? My guess would be warped rotors.

AzTJ is offline   Quote Quick Reply
Old 05-14-2009, 09:39 PM   #3
Jeeper
 
machi814's Avatar
 
Join Date: Feb 2009
Posts: 41
I guess I should specify, it vibrates when I am idleing at a stop. At stop lights, stop sign, etc. It just doesn't feel right.
__________________
06' Unlimited
Stock....for now.
SW Missouri
machi814 is offline   Quote Quick Reply
Old 05-14-2009, 09:46 PM   #4
IITYWTMWYBMAB

WF Supporting Member
::WF Administrator::
 
4Jeepn's Avatar
 
Join Date: Apr 2005
Location: Florence, KY
Posts: 9,972
Images: 5
bad motor mount?
__________________
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 05-14-2009, 10:13 PM   #5
Jeeper
 
mdogg78's Avatar
 
Join Date: May 2009
Location: Clemmons, NC
Posts: 32
it could be the hub assembly...when i had my 2004 impala(i know its not a jeep), I had the same problem and they said my hub assembly was so loose that they all needed to be replaced. But I would gues warped roters first since that is cheaper to correct
__________________
4.0L 1999 Steel Blue Wrangler
32'' Dayton Timberlines A/T
Pacer Streetlock Rims
Towing Package
Smittybuilt Front Bumper
mdogg78 is offline   Quote Quick Reply
Old 05-14-2009, 10:16 PM   #6
Jeeper
 
Ironman's Avatar
 
Join Date: May 2009
Location: Clovis, Ca.
Posts: 554
You need to raise the hood when the Jeep is idling and check things out. My first guess would be bad motor mounts from what your describing. But you would think that an '06 wouldn't have bad mounts yet.
__________________
'97 TJ--HP Dana 60 rear w/ARB--HP Dana 44 front w/high steer and ARB--5.38 gears--SM465 tranny--RE 5.5 LA kit--4:1 t case--rollin' on 37" MTR's and Allied Beadlocks
Ironman is offline   Quote Quick Reply
Old 05-14-2009, 10:33 PM   #7
Jeeper
 
Join Date: Aug 2008
Posts: 2,473
From what you've said and others missed - it vibrates/shakes when you are STOPPED? Rotors are stopped too, cannot be from there.

How many miles on the plugs, and are they the RIGHT ones - the right ones are called out on the underhood label, not from the idiots at the parts store.

Check for a vacuum leak - spray some BURNABLE carb cleaner or starting fluid at the obvious places. A vacuum leak will cause the bad idle, above idle it's less pronounced.

Let us know.
__________________
It's no wonder the country is falling apart - stupidity abounds!
rrich is offline   Quote Quick Reply
Old 05-15-2009, 07:14 AM   #8
MOz
Jeeper
 
MOz's Avatar
 
Join Date: Apr 2007
Location: Poconos
Posts: 2,484
Excessive vibration (at a stop) can be a couple of things: rough idle in the motor, bad motor or trans mount. Any engine codes? Stupid question: Is your mirror tightened down properly? I know when I change my mirrors over to run without doors, if I do not tighten them properly, they will shake. Jeeps do tend to vibrate more than cars... they're not exactly a Cadillac.

A bad motor seems unlikely due to the age. However, open the hood and while the engine is running (in park with e-brake on), have a buddy vary the RPM's unsing the accelerator pedal. Visually inspect the motor for excessive side-to side- motion in the engine bay. If the motor moves more than a couple of inches to either side, then I'd say you have a cracked motor mount. Verify the cracked mount from underneath the Jeep.
__________________


It ain't no fun unless you get some of it on you.
MOz is offline   Quote Quick Reply
Old 05-15-2009, 10:06 AM   #9
Jeeper
 
Join Date: Apr 2009
Posts: 65
If It's an 06 don't you have a warranty on it? Take it back to the dealer and let them worry about it. You better hurry though, there might not be a whole lot of Dodge dealers left pretty soon!!!
mnstrbetle is offline   Quote Quick Reply
Old 05-15-2009, 12:14 PM   #10
Jeeper
 
machi814's Avatar
 
Join Date: Feb 2009
Posts: 41
HA! No kidding.

Well it has 45k and I bought it used so I'm not sure on the warrenty. 70k on drivetrain and such, right?

I'll check the mounts. I haven't yet because it's so new I figured it would be that. What about the plugs? Could a bad one give me this trouble?

Thanks
__________________
06' Unlimited
Stock....for now.
SW Missouri
machi814 is offline   Quote Quick Reply
Old 06-16-2009, 07:27 PM   #11
Jeeper
 
machi814's Avatar
 
Join Date: Feb 2009
Posts: 41
It's been a while and no improvement, but it hasn't gotten worse either. It's not the motor mounts, and I haven't checked the spark plugs. I will be checking the vacuum leak idea tonight. Any other thoughts?
__________________
06' Unlimited
Stock....for now.
SW Missouri
machi814 is offline   Quote Quick Reply
Old 06-16-2009, 07:40 PM   #12
Jeeper
 
KBR97's Avatar
 
Join Date: May 2008
Posts: 5,051
Could be bad/old plugs. Or also could be a fuel issue. Maybe at idle your not motors not getting sufficient fuel pressure. That could explain the vibes because the motor at the verge of stalling. Idk, just throwing it out there.
KBR97 is offline   Quote Quick Reply
Old 06-16-2009, 08:25 PM   #13
Jeeper
 
machi814's Avatar
 
Join Date: Feb 2009
Posts: 41
What's a fix for bad fuel pressure? Or even better, what is a way to check it?
__________________
06' Unlimited
Stock....for now.
SW Missouri
machi814 is offline   Quote Quick Reply
Old 06-16-2009, 08:37 PM   #14
Jeeper
 
KBR97's Avatar
 
Join Date: May 2008
Posts: 5,051
Im no expert but, Open the hood at find the fuel rail above the intake manifold. Somewhere on there should be a tip that looks like a tire valve. You can check the pressure from there I think, with the correct tool. Dont take my word for this though. Maybe someone else can elaborate a little better.

and a fix ...could be clogged injectors, or bad injector, fuel filter clogged up.
Quick thing to do thats not expensive replace the fuel filter and dump a bottle of fuel injection cleaner in the tank right before your next fill up.

Might as well just do a full tune up. Change the plugs and wires, throw in a new fuel filter and some injector cleaner, and change the air filter if needed. That whole procedure shouldnt cost more than 50 dollars give or take. And less than an hour of your time.
KBR97 is offline   Quote Quick Reply
Old 06-16-2009, 08:44 PM   #15
Jeeper
 
machi814's Avatar
 
Join Date: Feb 2009
Posts: 41
I will plan to do that. Thanks for your help. Any other advice is still welcome. It's really getting annoying!
__________________
06' Unlimited
Stock....for now.
SW Missouri
machi814 is offline   Quote Quick Reply
Old 06-16-2009, 09:07 PM   #16
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,369
Images: 2
If you have changed spark plugs, exactly what model plugs did you install?
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 06-17-2009, 08:35 AM   #17
Jeeper
 
machi814's Avatar
 
Join Date: Feb 2009
Posts: 41
I haven't gotten to check them yet, but I would plan to use Champion's. That sound right?

__________________
06' Unlimited
Stock....for now.
SW Missouri
machi814 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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
near 2000 rpm rare vibration Xytras6 YJ Tech Forum 3 04-29-2009 08:48 PM
vibration on dry pavement hezfast2 JK General Discussion Forum 11 03-25-2009 12:24 AM
Long Term Effects of Driveline Vibration Unlimited TJ Tech Forum 3 04-19-2007 01:44 PM
bad driveline vibration rebelBullDawg325 YJ Tech Forum 9 02-26-2007 07:42 PM
slight tranny vibration raysnutt18 YJ Tech Forum 6 07-05-2006 06:10 AM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 12:26 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