cruiser54

Full time can be used full time and part time can only be used part time as on slick surfaces. A NP 231 is Part time.

cruiser54

It's not bad to stop, just shifts better generally when moving.

eugnton

Uh 231 is a strictly part time transfer case. if your full time light is coming on you got a bad wiring situation. just tooling around on a snowy street in part time is still not a good idea.

UJSLOST

Dont know about you guys but it tells on the drivers sunvisor which selection to use for what conditions.

Jlk111205

Wen I bought my 88 cherokee I notoced a connector had been disconnected. Its on the passenger side front axle. I hooked it back ip and wen in 2wd I have a light that comes on and off saying part time? Is that good or bad ?

eugnton

probly just a bad connection. the light flickering on of like that maybe why who ever owned it before you disconnected it. don't really think it matters because it's all mechanical and vacuum the controls your front differential

Jlk111205

Yea sounds legit, it dnt literally flicker. Sometimes its on wen im coasting and wen im stopping and goin it stays off most the time

lrowse

ok so i have tried the part time 4 and it seems like only the back wheels are spining when i do this. when i use the 4 high all the wheels kick in and pull me through the snow. so is this telling me that my part time is not working corrrect and i should look into what happened. also why did they make it so you have to go past part time 4 to get to 4 high. i would think they would put it the other way so that way when i need to shift to 4 high i can just pull the lever and be in it instead of having to go through part time to get to the 4 high.

thanks for any help on this

cruiser54

Thanks for your post.

We’re here to help but you must understand that all Jeeps are not the same.
In order for us to give you more accurate advice and help, we must know the following, as applicable, along with detailed information as to the symptoms/problems etc:

Year
Model
Engine
Transmission
Transfer case



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. The suggestions in ITALICS are mine.

"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".

To shift out of 4L, shift the transmission into neutral with the vehicle stopped, shift the transfer case lever to 2H, then to D if you have an automatic, or into first gear with a manual, and continue on.


Revised 01-31-2014

lrowse

1999 jeep XJ Limited all stock. i have many other 4x4 vehicles and understand the shifting but if you are not supposed to use the part time except off road then why do i have to shift through it to get to 4H. that is what bothers me and also today we had snow covered roads and i put in in part time expecting it to be really good traction and all that happened was my back tire was spinning and i was not going anywhrere, so i shifted it into 4H and it took right off then. this makes me think that my part time is not working correct. i recently bought this jeep and have really never used the 4wd yet since we just got our first snow since having it. is it possible that my part time is not working correct and that the rest of the transfer case is working just fine?

thanks

cruiser54

Don't be shy when shifting it. Use the method described in my first post.

Have you ever checked the lube level and condition in the transfer case?

FWIW, passing through Part-Time into full time is no big deal.

noslen

So in ft only one of the four wheels (the one with least traction) rather it be on front or back must spin where as pt two of the four wheels must spin one on front and one on back. Is this correct? I'm also trying to figure this out also and that is what I have gathered.

cruiser54

Correct.

XJwonders

noslen

Okay so what transfer case would a 94 Cherokee 4.0 with part and full time have in it.