1998 cherokee, changing from 2 to 4wd
Discussion
guys, can anyone help. My brother has loaned my dad hios Cherokee Orvis. Dad (who is notoriously stubborn) insists that you change it from 2 to 4wd while stationary. Im adamant that on mine you had to be moving at about 5-10mph to do it.
Dad reckons it says in the book to do it while stopped, anyone know for definite?
Dad reckons it says in the book to do it while stopped, anyone know for definite?
User Manual states that it should be done while moving at up to 'legal road speeds'. That's for the Normal 'Full Time' 4wd IIRC, there's a part-time setting that should be used only at lower speeds and on loose surfaces.
I tend to switch mine at anything from 10-30mph which it's advisable to do once a week to keep things lubed.
It can sometimes be a sod to get out of 4wd mode - i.e. you'll move the lever back to 2wd but it won't shift - this is sometimes caused by uneven tyre pressures which I faind a tad unintuitive!
I tend to switch mine at anything from 10-30mph which it's advisable to do once a week to keep things lubed.
It can sometimes be a sod to get out of 4wd mode - i.e. you'll move the lever back to 2wd but it won't shift - this is sometimes caused by uneven tyre pressures which I faind a tad unintuitive!
The book for every 4x4 I've ever read says do it moving, otherwise the teeth in the box can fail to mesh. I think the book on my 2004 says 2wd > 4wd upto 60mph & 3-5mph for hi > lo.
Oh do it in a straight line though and if it won't disengage try reversing.
Oh do it in a straight line though and if it won't disengage try reversing.
Edited by Hooli on Monday 29th November 22:27
I've a '96 and, as other have said, you have to be moving to smoothly change from 2wd to 4wd and back again.
The only exception is lo-range. For that, the engine must be in neutral and the car stationary.
As a matter of interest, as Hooli has mentioned, they can be sticky going from 2wd to 4wd (and visa versa) and can get stuck in 'Part-Time 4wd' To free it, a good burst in reverse and perhaps forwards usually makes it slip into the correct setting.
The only exception is lo-range. For that, the engine must be in neutral and the car stationary.
As a matter of interest, as Hooli has mentioned, they can be sticky going from 2wd to 4wd (and visa versa) and can get stuck in 'Part-Time 4wd' To free it, a good burst in reverse and perhaps forwards usually makes it slip into the correct setting.
IainT said:
Well, I say slight, there was about 15psi difference 
You should be beaten to death by a wet fish for that kind of difference. 
(not literally PC Brigade, and no fish were harmed in this post! 
)The transfer boxes are known to be 'sticky' getting back to 2wd, even with air in both rear tyres
IainT said:
On mine I had an issue with it not going back from 4-2wd... turned out to be a very slight imbalance in left/right rear tyre pressures.
Well, I say slight, there was about 15psi difference
Yup sounds a good cause. different rotational speeds between the front & rear diffs will cause a preload on the transferbox gears which jams them in engagement.Well, I say slight, there was about 15psi difference
Fire99 said:
IainT said:
Well, I say slight, there was about 15psi difference
You should be beaten to death by a wet fish for that kind of difference. (not literally PC Brigade, and no fish were harmed in this post! )The transfer boxes are known to be 'sticky' getting back to 2wd, even with air in both rear tyres
Loving the Jeep in this weather but it's good to remember that the extra drive is not equal to stopping ability.
Still finding the people pottering along on completely clear london roads at 15mph bloody annoying though.
Fire99 said:
IainT said:
it's good to remember that the extra drive is not equal to stopping ability.
This is probably one of the best points of the season. It's easy to get carried away with vast traction and then forget you still have to stop the car in a normal manner. Hooli said:
Fire99 said:
IainT said:
it's good to remember that the extra drive is not equal to stopping ability.
This is probably one of the best points of the season. It's easy to get carried away with vast traction and then forget you still have to stop the car in a normal manner. Definitely better but you can still lock 'em up if you get complacent on your grip
Fire99 said:
Hooli said:
Fire99 said:
IainT said:
it's good to remember that the extra drive is not equal to stopping ability.
This is probably one of the best points of the season. It's easy to get carried away with vast traction and then forget you still have to stop the car in a normal manner. Definitely better but you can still lock 'em up if you get complacent on your grip
Fire99 said:
Hooli said:
Oh aye, it's just a help not a cure.
Oui, definitely a good day to be in the trusty Jeep though. Once again, wifey unimpressed.
I have a 96 Cherokee & have been playing in the snow, re changing between the various 4 wheel / 2 wheel drive settings would I be right in saying that when using the 4 wheel drive lever anything befor the dog-leg you have to be moving to change gear & anything after the dog-leg you need to be in neutral & stationary to use?
CraigVmax said:
ok thanks mate, I was sure you had to be moving
from experience can be either.though they are known to get stuck in one or the other, and require a fair distance of driving before they magically switch over.
Just make sure when you move the lever, you have it in neutral.
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