question about 4-high - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 10-25-2008, 06:57 PM   #1
vettefever5's Avatar
Join Date: Aug 2008
Location: mass
Posts: 81
vettefever5 is on a distinguished road
question about 4-high

i've only had my jeep for ~3 weeks, and i just changed the engine oil, transmission and xfer case fluids. i haven't had any opportunity to really put it in 4wd and drive around.

i'm going wheeling for the first time tomorrow so i decided to put it in 4-high when going for a quick trip to walgreens down the street to see how it would react. for the most part it felt ok, no noises or anything... but i noticed that sometimes when taking a turn either left or right the car felt, to put it best, jerky. i put it in 4-low in my parking lot and drove it straight for a a bit and that felt fine, i just wasn't sure if what i was feeling with 4-high was normal. i've read that you can drive up to 45mph in 4-high and the fastest i got between here and walgreens was ~25, and in the parking lot i was probably going ~10-15mph.

so... any thoughts? is this normal activity for 4-high? i just want to make sure my 4wd works before going out tomorrow. thanks guys

vettefever5 is offline   Quote
Old 10-25-2008, 07:02 PM   #2
Mike B.'s Avatar
Join Date: Mar 2008
Location: Dodge City, Kansas
Posts: 65
Mike B. is on a distinguished road
What kinda roads were you on? Paved or dirt?

I'd stay away from using 4wd on dry paved roads.

Each man must for himself alone decide what is right and what is wrong, which course is patriotic and which isn't. You cannot shirk this and be a man. To decide against your conviction is to be an unqualified and excusable traitor, both to yourself and to your country, let men label you as they may.
-Mark Twain

The impersonal hand of government can never replace the helping hand of a neighbor. -Hubert H. Humphrey
Mike B. is offline   Quote
Old 10-25-2008, 07:13 PM   #3

::WF Administrator::
4Jeepn's Avatar
Join Date: Apr 2005
Location: Florence, KY
Posts: 11,347
4Jeepn is on a distinguished road
While I would not recommend using 4wd HI range on a paved road, if you didn't go to far you should be okay. Its really for non smooth road surfaces, gravel, snow, etc. And 4wd LOW is for off-road only, rocks, mud etc. In either of these settings the transfercase, needs slippage to work correctly and not bind anything up so to speak, That is why you got the jerky feeling when turning, as more stress was placed on the system, if you want to think of it that way.
4Jeepn is offline   Quote
Old 10-25-2008, 07:14 PM   #4
that's what she said

WF Supporting Member
jgano23's Avatar
Join Date: Oct 2008
Location: \m/-_-\m/
Posts: 16,482
jgano23 is on a distinguished road
Send a message via AIM to jgano23 Send a message via Yahoo to jgano23
it is in 4wd so when you turn on a paved road it will feel kinda jerky. The the front diff is locked so both front wheels are driving. when you turn the wheel that is on the inside of the turn (ie: passenger's side if you are making a right) needs to turn more than the outside wheel (ie: driver's side if you are making a tight) so that causes the jerky feeling. mike is right stay away from 4wd on a paved rd. anyway... what you are experiencing should be normal. as long as it doesn't do it in 2wd.
jgano23 is offline   Quote
Old 10-25-2008, 07:38 PM   #5
vettefever5's Avatar
Join Date: Aug 2008
Location: mass
Posts: 81
vettefever5 is on a distinguished road
i took it out for another quick drive and i noticed that it only really feels jerky when i turn the wheel far to one side, like when turning in/out of a parking space.

i also noticed that it feels like it gets stuck when i put it in reverse. when i put it in reverse to back into my parking space it feels like the e-brake is partially on and the car doesn't want to roll...
vettefever5 is offline   Quote
Old 10-25-2008, 07:40 PM   #6
vettefever5's Avatar
Join Date: Aug 2008
Location: mass
Posts: 81
vettefever5 is on a distinguished road
sorry, i hit the reply button without refreshing the screen after i posted my question and didn't notice the responses already! oops....

that's good information to know. i thought it felt like the front tires might have been locked, but i don't have a front locker and i didn't know the front diff was already locked.

thanks for the quick responses guys.... yes i was driving on a dry paved road, so that sounds like what is happening. whew, i'm just glad there's no problems with my 4wd system
vettefever5 is offline   Quote
Old 10-25-2008, 10:21 PM   #7
Join Date: Oct 2008
Location: Butler Ohio
Posts: 19
ROLYAK is on a distinguished road
I believe that jerky sensation is known as "crow hopping" and is due to the fact that "Command Trac" does not have differential gears in the transfer case. Therefore I believe a lot of stress is going to placed on the driveshafts and internal parts of the transfer case. (IOW don't do that!)

I will "exercise" my 4WD only on straight dry pavement.

I think you are probably correct that you do not have a locker on the front axle. My LS rear axle drags when surface adhesion is insufficient. (tears up the grass in the front yard!)
ROLYAK is offline   Quote
Old 10-27-2008, 12:41 AM   #8
Join Date: Sep 2008
Location: leesburg ga
Posts: 165
mknight759 is on a distinguished road
stay off the pavement in any 4wd thats asking for something to break but souds like everthing is working

mknight759 is offline   Quote

Thread Tools

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
i need high steer trac bar upinar TJ General Discussion Forum 3 01-12-2009 07:14 PM
high steering question upinar TJ Tech Forum 1 09-12-2007 05:07 PM
NSG370 6spd and high pitched chirp / squeak Beowulf TJ General Discussion Forum 5 06-03-2007 07:33 PM
High oil pressure question Demodave TJ Tech Forum 3 06-01-2007 10:57 AM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 11:32 PM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.

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

Enter your email address:

Delivered by FeedBurner