Full Time vs. Part Time FWD - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > WJ Grand Cherokee Forum > Full Time vs. Part Time FWD

Engo LED Flush Mount Lights *PAIR* Flood or Spot 1,600 LumYukon Ultimate 35 axle kit for c/clip axles with Yukon ZipRockridge 4WD IS Taking Zone Offroad Suspension Lift Kits

Reply
Unread 12-18-2013, 10:11 AM   #1
Tumbleweed1954
Registered User
2000 WJ 
 
Join Date: Aug 2013
Location: Beatty, Nevada
Posts: 52
Full Time vs. Part Time FWD

I'm new to Jeeps and am wondering under what circumstances you might use FULL TIME 4WD? I figure when it is raining or when there is light snow on the highway. Any other conditions for using it?

Tumbleweed1954 is offline   Reply With Quote Quick reply to this message
Unread 12-18-2013, 10:27 AM   #2
ChrisHager
Web Wheeler
 
ChrisHager's Avatar
2004 WJ 
 
Join Date: Jan 2011
Location: Springfield, Illinois
Posts: 4,818
http://wjjeeps.com/tcases.htm#SELEC

You can use Full-Time any time. Towing, dry pavement, dirt roads, gravel, wet leaves, snow, ice, sleet, rain, cow pastures, etc.
__________________
His: 2004 WJ - OME HD 'Kolak' Lift - Build Thread
His: 1979 J-10 - 3" on 33s - Build Thread
Hers: 2000 TJ

ChrisHager's 'Grilled' Thread

WJ Torque Specs

Quote:
Originally Posted by tommyooooooh View Post
But ChrisHager makes me want to poor water on a burning bucket of gasoline now just out of curiosity.
Quote:
Originally Posted by billzcat1 View Post
The latest lift kit from Rough Country? :D
Quote:
Originally Posted by Jeeples View Post
Your symptoms sounds just like what it does when it's not doing what it should because of how it is.
ChrisHager is offline   Reply With Quote Quick reply to this message
Unread 12-18-2013, 10:27 AM   #3
michiganmaveric
Got Beer?
 
michiganmaveric's Avatar
2011 JK Wrangler 
 
Join Date: Aug 2004
Location: Southeast Michigan
Posts: 2,735
You can use full time any time and under any conditions. It is part time you have to be careful with. Never use part time on dry/rainy pavement conditions as you could tear up your xfer case/axles. Part time must have slippery conditions, I.E. snow,ice,sand,gravel to work properly.
__________________
Previous Jeeps: 84 CJ7 (A True Jeep), 2000 XJ (163,000 Miles/Totaled (Pictures of wrecked Jeep in gallery)), 2004 WJ (parting out die to major electrical issues)

If you don't have time to do it right the first time, how do you have time to do it over.

Lifetime member #13

www.militaryjeepers.com lifetime member/airforce26yrs

2011 Tango/Mango JKU
michiganmaveric is offline   Reply With Quote Quick reply to this message
Unread 12-18-2013, 10:35 AM   #4
KayCeeJeep
Registered User
2004 WJ 
 
Join Date: Apr 2011
Location: Kansas City, Missouri
Posts: 1,119
Full time is exactly that, you can use it full time without concern. Works great for inclement weather or light snowfall on the roadway, I especially like it for my wife since she can drive the Jeep anywhere and not get stuck. The part time only confuses her no matter how many times I explain it, and I don't want her messing with the 4wd shifter anyway!
KayCeeJeep is offline   Reply With Quote Quick reply to this message
Unread 12-18-2013, 09:35 PM   #5
wjjeep19
Registered User
2002 WJ 
 
Join Date: Aug 2012
Location: Chambersburg, Pennsylvania
Posts: 250
Wow Im glad I read this. I didnt know you could use 4 full time on dry pavement. I thought that would mess up the xfer case just like 4 part time. Can you explain why you can use 4 full time? Since its 4 full time its giving power to the front wheels. So by turning sharp on dry pavement wouldnt that cause the front wheels to be really grabbing the road and result in messing up the xfer case? Ive had my jeep for awhile but never thought of it. I just applied it to my 89 Bronco and 77 RamCharger on dry pavement.

Like I said please explain, I love learning.
wjjeep19 is offline   Reply With Quote Quick reply to this message
Unread 12-18-2013, 10:01 PM   #6
Len455
Registered User
2000 TJ Wrangler 
 
Join Date: Aug 2011
Location: Phoenix, Arizona
Posts: 19
So part time dosent blow up because when we use it off road we get enough slip from the dirt sand etc to not create enough bind in the driveline to do any harm. In a full time system such as some cherokees escalades and subarus we get around the issue of the driveline bind through a third differential just after the transfer case. This allows the slip onroad to not build up any bind. I believe that this can also be bad off road though because just like lifting a wheel and losing traction the same thing can happen between the front and back axles. If you search up subaru drivetrain diagram youll get a decent diagram explaining.
Len455 is offline   Reply With Quote Quick reply to this message
Unread 12-19-2013, 04:09 AM   #7
michiganmaveric
Got Beer?
 
michiganmaveric's Avatar
2011 JK Wrangler 
 
Join Date: Aug 2004
Location: Southeast Michigan
Posts: 2,735
Quote:
Originally Posted by wjjeep19 View Post
Wow Im glad I read this. I didnt know you could use 4 full time on dry pavement. I thought that would mess up the xfer case just like 4 part time. Can you explain why you can use 4 full time? Since its 4 full time its giving power to the front wheels. So by turning sharp on dry pavement wouldnt that cause the front wheels to be really grabbing the road and result in messing up the xfer case? Ive had my jeep for awhile but never thought of it. I just applied it to my 89 Bronco and 77 RamCharger on dry pavement.

Like I said please explain, I love learning.
There is a differential in the xfer case that allows this. Read about the 242 case in the link posted above in post #2
__________________
Previous Jeeps: 84 CJ7 (A True Jeep), 2000 XJ (163,000 Miles/Totaled (Pictures of wrecked Jeep in gallery)), 2004 WJ (parting out die to major electrical issues)

If you don't have time to do it right the first time, how do you have time to do it over.

Lifetime member #13

www.militaryjeepers.com lifetime member/airforce26yrs

2011 Tango/Mango JKU
michiganmaveric is offline   Reply With Quote Quick reply to this message
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.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
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






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.