Full Time/Part Time 4wd?

Buffalo Chip · 03-09-2002, 06:12 AM

I just got a new Liberty limited with the full 4wd package (Selec-Trac). There is a full time 4wd and part time 4wd. When and under what circumstances should I choose between the 2?

Liberty-4-All · 03-09-2002, 10:00 AM

The easy way to remember when to use them are as follows:

Full-Time 4WD can be used all the time. It is for the street and can be engaged on any service...Full-Time. It allows all four wheels to turn at different speeds.

Part-Time 4WD can be used only some of the time. It is for off road adventures and should only be used on loose dirt/mud/ect. When engaged it locks the front and rear driveshafts together so that front and rear wheels can not turn at different speeds. It gives better traction for off road adventures. Using part-Time 4WD on the road will damge your drivetrain.

4WD LO is for serious 4Wheelin'. Read your manual to get the correct engagement criteria. It can not be engaged at up to 55 MPH like Full-Time and Part-Time 4WD.

Kenny 96 XJ · 03-09-2002, 10:02 AM

The full time 4wd can be used all of the time hence full time. But the part time mode is to be used only on slipery surfaces like snow, ice, dirt, mud, etc... But it should NOT be used on dry pavement since there will be a lot of strain on the mechanical components especially during turns.

In a turn, the outside wheels travel a greater distance than the inner wheels, so they have to turn at different speeds. The full time 4wd lets this happen but not the part time. Off-road in part time mode, the wheels will slip and skip due to the surface condition without strain tou your truck.

So in winter, put it in full time and forget it. Off-road, better put it in part time and 4LOW.

Hope this helps...

03-09-2002, 10:00 AM	#2
Liberty-4-All Registered User Join Date: Dec 2001 Location: San Antonio Posts: 119 Profile Gallery Classifieds My Jeeps	The easy way to remember when to use them are as follows: Full-Time 4WD can be used all the time. It is for the street and can be engaged on any service...Full-Time. It allows all four wheels to turn at different speeds. Part-Time 4WD can be used only some of the time. It is for off road adventures and should only be used on loose dirt/mud/ect. When engaged it locks the front and rear driveshafts together so that front and rear wheels can not turn at different speeds. It gives better traction for off road adventures. Using part-Time 4WD on the road will damge your drivetrain. 4WD LO is for serious 4Wheelin'. Read your manual to get the correct engagement criteria. It can not be engaged at up to 55 MPH like Full-Time and Part-Time 4WD. __________________ 02 Sahara Edition KJ Best Mod...PowerTrax No Slip Locker 265/75/16 Maxxis Buckshot Mudders ARMOR, ARMOR, ARMOR LLL=15.75" L.O.S.T.member #000001 Visit www.KJJeep.com I got your Grocery Getter Hangin'

03-09-2002, 10:02 AM	#3
Kenny 96 XJ Registered User Join Date: Dec 2001 Location: Quebec City, Quebec, Canada Posts: 58 Profile Gallery Classifieds My Jeeps	The full time 4wd can be used all of the time hence full time. But the part time mode is to be used only on slipery surfaces like snow, ice, dirt, mud, etc... But it should NOT be used on dry pavement since there will be a lot of strain on the mechanical components especially during turns. In a turn, the outside wheels travel a greater distance than the inner wheels, so they have to turn at different speeds. The full time 4wd lets this happen but not the part time. Off-road in part time mode, the wheels will slip and skip due to the surface condition without strain tou your truck. So in winter, put it in full time and forget it. Off-road, better put it in part time and 4LOW. Hope this helps... __________________ 96 XJ Sport having the 6 cyl engine as the ONLY factory option 4" custom lift, 31" Yokohama Geolandar A/T + II, Quick disconnects, no rear sway bar