Question about 1997 Jeep Cherokee

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Transfer case pops out of 4-lo

Hi, I just bought a 1997 Cherokee Sport, i6 engine, automatic, with command-trac 4wd. Everything seems to be running brilliantly, except the low range gearing. I don't have the manual for the vehicle, so I tried to shift into 4 lo by idling the transmission in neutral, then putting the transfer case lever from 2wd down to 4lo. It shift in, but as soon as I shift the transmission into drive, the transfer case lever pops into neutral. I am leary to try it while moving unless I know its not going to wreck something. 2 Hi and 4 Hi seem to work perfectly fine. Am I simply trying to change into gear wrong, or is there a problem with the transfer case. If so, what might it be? Thanks, any help would be appreciated. -Matt

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  • matthewheisi Apr 17, 2009

    So while rolling with the transfer case in neutral and the transmission in drive, put it into 4-lo? Or should the transmission be in neutral too?

  • matthewheisi Apr 17, 2009

    Thanks for the help! I'll try that out. Of theres any grinding, I'll bring it into a shop to get that transfer case looked at.

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  • Jeep Master
  • 6,982 Answers

Either your linkage is not properly adjusted or the shift fork is a bit worn inside the transfer case. I have a bit of wear on my own and shift into low range while rolling with no load, between 5&20mph and it works fine except that I need to anticipate needing it before hand. One important rule...If it grinds, don't force it into gear. That will cause damage.
Also, if you just got it, change the oil in there...you have no idea when it was last serviced.

Posted on Apr 17, 2009

  • Richard Scordino Apr 17, 2009

    Transmission in drive, rolling, move transfer case into gear. Remember...if it grinds, stop doing that it may be too worn to shift in and you don't want to do any more damage.

  • Richard Scordino Apr 17, 2009

    Hope it works...As I said, mine's like that and has been for quite some time (too busy fixing other peoples stuff). I do a bunch of deep woods driving and it's worked every time I've needed it!!!
    Good luck!!!


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1 Answer

4 wheel drive wont lock in on my 99 jeep cherokee.is there vacuum


are you on pavement, or offroad.?
99 Cherokee what transfer case?
if Part time system. then,.
are your tires on ice or dirt?
if not its cockpit error.
read the operators guide, on this.
if on ICE,say so, we can not know what transfer case you have
nor what tires are sitting on.
do tell, and we can tell you what good or bad.

here is the build list for these years XJ
what do you have. ?
The full time box, must not be in 4Lo , on pavement
unless it too is on ice .

All the transfer cases used on the Cherokee were chain driven with aluminium housings. Command-Trac was standard on XJ models built with 4WD.
  • 1984-1987: New Process NP207 Command-Trac, part-time only, 2.61:1 ratio with low range
  • 1984-1986: New Process NP228/229 Selec-Trac, full- or part-time, 2.61:1 ratio with low range
NP228/229 has a vacuum switch for 2WD-4WD selection on the fly and a separate manual lever for low range
  • 1987-2001: New Process NP231 Command-Trac, part-time only, 2.72:1 ratio with low range
NP231 has the following settings: 2HI, 4HI, N, 4LO
  • 1987-2001: New Process NP242 Selec-Trac, full-time or part-time, 2.72:1 ratio with low range
NP242 has the following settings: 2HI, 4 full-time, 4 part-time, N, 4LO

-----------------------------------
never post questions on 4wd unless you know what is there.
the transfer case, also has tag , telling what it is.

Jan 07, 2017 | Jeep Cars & Trucks

1 Answer

How to deactivate 4 wheel drive on jeep cherokee crd 2012 model


this is USA forum.
we dont have that car here.
nor your book on it.
is this part time 4wd, and on dry pavement/
if yes, move car to dirt, 1 tire must be on ice, dirt ,grass ?
and now you can exit 4wd, due to dive line wind up.
we dont have 2012 Cherokees here, just liberty. kinda the same.
the book on my rice jeep , says jack up one tire.(funny to read)
day 1, our cars were opted with (part time)
The Command-Trac transfer case has four positions: 2-HI, 4-HI, Neutral, and 4-LO.
or
Day 1, opted
The Selec-Trac transfer case has five positions: 2-HI, 4-HI Part-Time, 4-HI Full-Time, Neutral, and 4-LO.

they are not the same system at all.

only you know what you shifter reads, no photos by you to help
did you read your operators manual first.
it tells you how to use the box.

four wheel drive mode tells me zero.
use the correct names, seen above, are you in 4-HI
on dry pavement.
or 4-L (either)

Jan 03, 2017 | Jeep Cars & Trucks

2 Answers

I have a 93 jeep Cherokee, it will move in 4wh and in 4wl but will not go back into 2wd?


Hello guy
try posting what 4wd system you have,? first.
command trac or select track, (the latter is full time)
part time or the full time system,
we cant guess it....
read the operators guide first, if a part time system only
as i suspect, stop driving on dry pavement.
it's only for ice, or dirt. part time. part time is not a full time system.
Command-Trac
shifting to 4wd on dry (means no ice) pavement causes, drive line wind up! and the gears to lockup. (see steering get tight in turns?> and is dangerous to drive it like this , you, me and the box)
posted here 100s of times.

http://www.rubicon-trail.com/4WD101/driveline-bind.html


the non grand Cherokee. early

had these choices
  • 1987-2001: New Process NP231 Command-Trac, part-time only, 2.72:1 ratio with low range
NP231 has the following settings: 2HI, 4HI, N, 4LO
  • 1987-2001: New Process NP242 Selec-Trac, full-time or part-time, 2.72:1 ratio with low range
NP242 has the following settings: 2HI, 4 full-time, 4 part-time, N, 4LO


as you can see you need to first know, what NP box you have or
photo your shift lever for 4wd, an post it and we tell you.

more facts, on select trac. (totally unlike command trac)
Selec-Trac locking hub is used on 4WD Cherokee. Selec-Trac
utilizes a non-disconnect front axle. Engagement of 2WD or 4WD is
accomplished at transfer case by means of mechanical shift linkage.
System allows full or part time 4WD. Selec-Trac can be shifted into
2WD or 4WD modes from inside the vehicle at any speed.
unquote
next from the service manual,
4WD TO 2WD
1) Place mode select switch in 2WD position. Transfer case
should shift to 2WD and not allow shifting into 4WD or LO range. Axle
should shift after transfer case shifts.
2) To determine if front axle has completed a shift out of
4WD into 2WD, position mode select switch back to 4WD position while
operating vehicle at slow speed. If vehicle shifts into 2WD, axle will
ratchet. If shift is not completed, transfer case will shift into 4WD
and hissing sound will come from mode select switch.
end quote.

if unsure read the FSM book its free.
shows you both systems and how to diagnose it.

in the box, click Cherokee,,then click 1993, and behold.
the real deal.

http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service

4e7ebed4-9c81-4927-b26e-02808a82acff.jpg

May 10, 2016 | Jeep Cars & Trucks

1 Answer

My 4 wheel drive no longer works.


WJ jeeps.
what mode? 4h, 2l lock >?
why not just drive it and get it all loose and happy first.
get the gearlube hot, see if it wakes up, i bet it does.
there is no vacuum hose. that is part time. used long ago.
vacuum ended in 1995 with command trac.
the newer cars the front axle is cut out, inside the transfer case front end. ending vacuum and now electric.

Select track (stay off dry pavement in 4wd)
Quadra-Trac-II NV 247 Gerodisc system 1999+
Quadra-Drive NV247
if quada stay out of low or lock.

read this page,. and discover what you have.
or go under car, see that transfer case, see that silver and red tag
that is the NV number. what is yours>?
we can not guess options. ever.

http://en.wikipedia.org/wiki/Jeep_four-wheel-drive_systems

which one of 4.
http://www.wjjeeps.com/tcases.htm



Mar 08, 2015 | 1999 Jeep Grand Cherokee Limited

1 Answer

4wd/4low lights flash


Hi there:
That flashing is a signal from the GEM computer that indicates a failure in the Control-Trac system. Typically it is one of the Hall-effect axle speed sensors (located in the t-case) that has failed. In the auto position on your model the system monitors relative front and rear axle speeds, increasing the period of engagement of the clutch pack in the transfer case to eliminate the rear moving faster than the front. If it gets to full-lock, for example, and the rear still seems to be turning faster then it reverts the system to 4WD (locks the transfer case in 4wd as it does in 4wd-lo) and flashes the lights to tell you of the problem (in 97 and later models it reverts to 2WD in the default, auto position). Some have reported cleaning the contacts on the speed sensors has helped, but you may want to get to a dealer if the problem persists. Watch that they dont automatically try to replace the computer or the transfer case. Usually it is just a sensor problem, which is relatively easy and inexpensive to replace. There is a shift motor on the t-case on these models, but it is only used to select 4wd-lo and yours seems to do that OK.

Other details HERE.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

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1 Answer

Will a 95 jeep cherakee auto trans fit in 98 jeep cheokee


if your engine is AMC I6 high output version, it may wont fit without doing small modifications. if it is not high output version it will. transfer case differs model to model. np242 selectrac and np231command trac. they have little difference on 4wd systems. all have 2wd option.

actually it is supposed to have same transmission versions between 1988 to 2001. Aisin-Warner AW4.

Nov 08, 2011 | 1998 Jeep Grand Cherokee

1 Answer

Can i change from a 4 wheel transmission to a 2 wheel transmission


without changing transfer case it is not possible.* (normal circumstances)

what you need is NP242 or NP231 selectrac /command trac transfer cases from 4.0 G.cherokee or Cherokee. those allows you to select 2wd for all time driving and let you decide on mode when 4wd is needed.

also you can test to see how it feels by removing front shaft for trial purposes but you will be loosing power because all time transfer case distributes the traction over front and rear.( do not try this when driving in traffic)

*I also heard that it is possible to convert all time mode to all time 2wd but keeping 4wd low intact.( i wonder how realiable the result is though)

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Hi I have a 96 jeep cherokee country with a transfer case problem. my transfer case has 2wd, 4wd full time,4wd part time, and 4wd low. the tag on the transfer case says 242 does this seem right or has...


the 242 is the correct transfer case for your car.Its the selec-trac transfer box.The other type is the command-trac.Both types were used in Cherokees.Hope this helps

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What kind of ATF goes in my 1992 cherokee?


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4WD


Look for damaged wires, or something bent, on the Auto Disconnect Device on the front axle before you do anything else. The 4WD HI light is not coming on because the front diff is not engaging.
Re 4 LO: In 4 LO, you ar NOT getting "4 LO", what you are really getting 2WD LO, because of the output gearing of the transfer case.
In any case, your front diff is not locking in, in either mode. The A.D.D. controls the 4 Hi lite.

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