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Unread 01-10-2012, 02:58 AM   #1
zach8935
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1995 XJ Cherokee 
 
Join Date: Jan 2012
Location: douglasville, Georgia
Posts: 15
never had a 4x4 need some help and advice

i have a 93 grand cherokee laredo 4x4 with the 4.0 straight 6 in it. and i have no clue how to work the 4 wheel drive. i know it has part time 4 wheel which i don't know what wether thats all wheel or four wheel. two wheel i know how to use of course and i really have no need for 4 low. but when i switch to 4 wheel it makes god awful noise and doesn't feel like it's pulling. then when i switch back to 2 wheel it wont go back in till i stop put it in park let it sit and then go. i also see that it has a full time 4 wheel but i cant figure out how to get it to go in it. i know little to nothing this is my first vehicle and 4x4 by default so i'm tryna learn so if you can answer or help thank you

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Unread 01-10-2012, 03:03 AM   #2
98zjay
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1998 ZJ 
 
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Location: Louisville, KY
Posts: 303
stop. put the jeep in nuetral with foot on brake. pull lever back into 4wh then put into drive and see what happens
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Unread 01-10-2012, 03:05 AM   #3
98zjay
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1998 ZJ 
 
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you wont notice a big difference in 4wd and 2wd unless your offroad where you can tell if the front tires are spinning
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Unread 01-10-2012, 03:21 AM   #4
Foundrydude
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1995 ZJ 
 
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Part time 4wd = fully locked and only used for 4 wheeling, not for street use. Will buck and jerk on pavement but rules off road

Full time 4wd = pavement 4x4, more like all wheel drive. If you go wheeling it may spin one tire instead of one on the front and one on the back. But totally suitable for driving on pavement in bad weather.

4 low = totally locked, unsuitable for pavement use, top speed 35mph due to gear reduction. Great for off roading with steep hills but probably not necessary for any street conditions. Even if you go in the ditch, 4 part time will probably work better to get out of the ditch because 50mph of tire spin will overcome a lot of stuckness. When you want the jeep to operate with off road conditions at less than a walking pace, use 4 low.

Only shift the transfer case with the transmission in park or neutral,and only stopped (or moving 1 mph), or it will grind.

good luck
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Unread 01-10-2012, 03:24 AM   #5
zach8935
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1995 XJ Cherokee 
 
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Location: douglasville, Georgia
Posts: 15
So how do I get it into full time 4 wheel
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Unread 01-10-2012, 03:26 AM   #6
XJ-JekL
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1995 XJ Cherokee 
 
Join Date: Aug 2011
Location: Cleveland, Oh
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Quote:
Originally Posted by zach8935 View Post
i have a 93 grand cherokee laredo 4x4 with the 4.0 straight 6 in it. and i have no clue how to work the 4 wheel drive. i know it has part time 4 wheel which i don't know what wether thats all wheel or four wheel. two wheel i know how to use of course and i really have no need for 4 low. but when i switch to 4 wheel it makes god awful noise and doesn't feel like it's pulling. then when i switch back to 2 wheel it wont go back in till i stop put it in park let it sit and then go. i also see that it has a full time 4 wheel but i cant figure out how to get it to go in it. i know little to nothing this is my first vehicle and 4x4 by default so i'm tryna learn so if you can answer or help thank you
I see your new here. Welcome to the world of Jeeps!
Friendly advice, the search function and a little bit of grammar goes a long way here.

That being said, I believe you have the 249 t-case, and I also believe it's a "shift of the fly" style. Meaning you shouldn't have to be in park, neutral or have your foot on the brake. You can switch while in drive, and going about 3-5 mph. Sometimes it takes a pretty hard yank on the shifter to get it into gear, and you may hear some god-awful grinding of the gears. A little bit isn't to bad, you'll learn where to shift it just like a manual transmission, because it's a manual 4wd. Sometimes they need a little bit of "coarsening" to get them where you want it. Try it with your door open and ear pointed to the ground and listen to it engage and disengage.

This ought to help as well:
4wd full time: Wet or snow covered roads, daily driving basically.
4wd part time: Offroad use only! Loose dirt, rocks or mud. Do not drive on dry or grippy surfaces because your axles are locked together. (Search "crow-hop" for more info)
4lo: Provides lower torque to the wheels for better traction i.e. climbing an ice covered hill. DO NOT spin your wheels in 4lo ever. Downshift your transmission to 1 or 1-2 (idk the ZJ too well) to prevent revving the engine to high.


Hoped this is what you we're looking for, happy trails!
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Unread 01-10-2012, 03:28 AM   #7
XJ-JekL
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Foundrydude, you beat me to it!
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Unread 01-10-2012, 03:35 AM   #8
zach8935
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1995 XJ Cherokee 
 
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So how do I engage the full time. The part time I get but I can't figure out his to get it to engage no matter what I try
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Unread 01-10-2012, 03:40 AM   #9
98zjay
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1998 ZJ 
 
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Pretty sure 249 is qaudratrac. Only 4h and 4l that's what I have
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Unread 01-10-2012, 03:44 AM   #10
zach8935
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1995 XJ Cherokee 
 
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Location: douglasville, Georgia
Posts: 15
Well in between my part time and 4 low lights there's a full time one to. I just can't get it to engage and light up
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Unread 01-10-2012, 03:47 AM   #11
SAR-Swimmer
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1997 ZJ 
 
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Location: Mission, B.C. Canada
Posts: 752
Think he's talking about a 242, since he's having problems getting it into 2wd.
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Unread 01-10-2012, 03:55 AM   #12
zach8935
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1995 XJ Cherokee 
 
Join Date: Jan 2012
Location: douglasville, Georgia
Posts: 15
I think Noone is really sure of what I'm asking. I am in 2 wheel and don't have any problems with it. I want to know how to get it to go from 2 wheel drive into full time 4 wheel but all I can get it to go into is part time
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Unread 01-10-2012, 04:16 AM   #13
KoreaZJ
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Unread 01-10-2012, 04:29 AM   #14
torchd
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1998 ZJ 
 
Join Date: Jan 2010
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Quote:
Originally Posted by Foundrydude View Post
Part time 4wd = fully locked and only used for 4 wheeling, not for street use. Will buck and jerk on pavement but rules off road

Full time 4wd = pavement 4x4, more like all wheel drive. If you go wheeling it may spin one tire instead of one on the front and one on the back. But totally suitable for driving on pavement in bad weather.

4 low = totally locked, unsuitable for pavement use, top speed 35mph due to gear reduction. Great for off roading with steep hills but probably not necessary for any street conditions. Even if you go in the ditch, 4 part time will probably work better to get out of the ditch because 50mph of tire spin will overcome a lot of stuckness. When you want the jeep to operate with off road conditions at less than a walking pace, use 4 low.

Only shift the transfer case with the transmission in park or neutral,and only stopped (or moving 1 mph), or it will grind.

good luck
That's not true. I believe you can shift the TC on the fly (while moving) up to 55 mph
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Unread 01-10-2012, 06:04 AM   #15
jtackerman28
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You can shift it under 55 do it often with no problems. He has a 242 and he needs to just rip it like he means it. That is how you will get it in 4wd. It that doesn't work then you have other issues. Only stop and put it in neutrel if you are putting it in 4lo. Also full time (can be used "full time")
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