In my 00 xj. The shift lever goes from 2wd->4part time->4full time->4lo.
What's the diff between 4part time, and 4 full time? When should either
Get engaged at?
Which one is the equivalent as 4hi?
When I have the jeep on drive, and engage part time it engages. Cluster light turns on as well.
When I move it down to full time while still on drive. Nothing happens,
it just feels like the jeep is in neutral. Doesn't engage, don't move anywhere and
cluster light doesn't light up. When shifting into 4lo i kinda have to force it in.
If I move lever slowly it grinds and throws it out. But 4lo works when engaged it feels as if. It wants to pop a wheelie...maybe that's just the torque.
. Could there be a problem with t.c?

 

Shift AT SPEED except into 4 low. read the instructions on your visor.

 

Part time means that it should only be used "part time" like on slick surfaces where the wheels can slip. It locks everything together so all the wheels will turn at the same rate. Using it on dry surfaces, the wheels can't slip and make up the difference of the turning ratio and will eventually break something. Full time means you can use it "full time" on any surface. There is a mechanism in the transfer case that allows slippage for the different rotational ratios of the wheels. 4 low reduces the gearing ratio and should only be used when maximum torque and traction are needed, like rock crawling or something. Engage it only while driving very slowly, less than 5 mph or it will break something.
I have this tcase in my '91 limited and it is pretty touchy. Sometimes I have to shift it into the mode I want, then stop, put it in park, maybe reverse a little, then it will shift into the mode I want. Try that and see if it works.

 

DO NOT use part-time on dry surfaces - only on slippery surfaces like snow, mud, etc. Use full-time if you are going to be driving on dry surfaces at all, such as when there are scattered patches of snow/ice.

 

Not quite. Locks front and rear drivelines together. It does not lock anything in the diffs themselves.

 

When I'm back on my PC, I'll post up the shifting procedure per the manual. Frickin house guests in my office!! Frickin Windows 8 on a laptop!!

 

I didn't mean locks the diffs. Just an analogy to explain that it shouldn't be used on dry surfaces because it doesn't allow for slippage.

 

LOL!

 

Well where I'm from in Deep South Texas, there's no snow or ice.
So I don't worry about that. But I love fishing, and where I go
at the beach I need to drive on sand for 30miles. What setting should I
be using? When I engaged the 4x4 I was in drive but wasn't driving.
I had the brakes on. First setting worked, and light turned on on dash.
Full time didn't. I was on drive but not moving at all and when I tried to
accelerate it didn't move at all. And when I engaged 4lo i wasn't moving either
But with the jump it did I could tell it was engaged. And cluster light was on.

 

Well where I'm from in Deep South Texas, there's no snow or ice.
So I don't worry about that. But I love fishing, and where I go
at the beach I need to drive on sand for 30miles. What setting should I
be using? When I engaged the 4x4 I was in drive but wasn't driving.
I had the brakes on. First setting worked, and light turned on on dash.
Full time didn't. I was on drive but not moving at all and when I tried to
accelerate it didn't move at all. And when I engaged 4lo i wasn't moving either
But with the jump it did I could tell it was engaged. And cluster light was on.

 

You should be able to use part time on sand. Either your linkage needs some adjustment or something is wrong with the tcase. Works in part time and 4lo, but not full time? Any strange noised coming from tcase when engaged or trying to engage?

 

No noises at all or struggle to engage. Slips right in.
The jeep just don't move either forward or backwards
even tho its in "D" it'll just sound like its in neutral.
Only 4lo struggles to engage. Makes grinding noise. And
I have to pull lever harder. Would it be ok to use part time
When fishing even tho full time don't work.

 

When shifting into 4-Lo I find it best to have the Jeep stopped, engine running, transmission in Neutral.

Part-Time would be fine on sand but I would try to determine the cause of trouble before driving 30 miles off-road in sand.

 

Here's how the factory suggests you shift the transfer case and I've been doing this since these things were new and I worked at the dealership. Quoted from the owner's manual.

"To engage, shift the transfer case lever from 2H to 4H while the vehicle is moving at any legal speed". I let off the gas, throw the lever, and then tap the gas and let off.

4L position: " To engage, slow the vehicle to 2-3 MPH , shift the transmission to Neutral, then shift the transfer lever to the right and pull firmly rearward to 4L".

 

Ok. Thanks for the help!