Question about 2000 Jeep Grand Cherokee Laredo

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Selec-trac does not fully disengage in 2wd

All modes 4wd work fine but do not fully disengage in 2wd.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 21 Answers

SOURCE: 2005 Jeep Liberty stuck in Part Time 4wd

I questioned the dealer about my 2005 because mine was disengaging what I thought to be rough compared to what I was used to. They told me that I should shift the vehicle into Neutral before shifting the selector. I have also found that shifting between Reverse and Drive a couple of times while stopped has helped as well. By doing these couple of things, I have had no trouble since. I hope this helps as it might at least be something to try.

Posted on Jun 25, 2009

  • 78 Answers

SOURCE: Switching back 4WD to 2WD - 1998 Jeep Cherokee 4L Limited Petrol

With any 4WD like this, always move a few feet in the opposite direction when disengaging. If you were moving fwd in 4wd, switch to 2wd, back up a few feet, then go fwd.

Posted on Jun 30, 2009

wracefans24
  • 1985 Answers

SOURCE: The car jumps when the wheels are turned left or right

you need to have the front axles checked or replaced,they are not freely turning

Posted on Dec 28, 2009

tburtk
  • 158 Answers

SOURCE: 1997 Jeep Wrangler 4wd high disengages

you might try checking the linkage on trans case shifter. may need adjusting. might not be getting fully engaged

Posted on Feb 11, 2010

skychief2001
  • 21873 Answers

SOURCE: when i try to reverse in 4wd, my fuel injector fuse blows, but i can reverse in 2wd just fine

After looking over a few dozen schematics, it looks like fuse 26 is a 15 amp fuse that goes to the PCM among other things. One of the things in the drivetrain that might be powered by that fuse is the transfer case position sensor. The sensor is not shown having its own fuse but gets power from the PCM.
If that is the same fuse you are talking about, you might try unplugging that sensor and see if the fuse still blows.
Otherwise you may have to buy or download a service manual with the wiring diagrams and search them for what is powered by that fuse.

Posted on Jul 23, 2012

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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

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

2 Answers

Where is the tcm located on a 2004 jeep libert


Inside the ECM/PCM. Dodge,Chrysler, and Jeep. Used to have separate TCM's. But now the integrated in to the power train control module. PCM. what is your problem?

Jan 17, 2015 | 2004 Jeep Liberty

1 Answer

Jeep Liberty 4 Wheel Drive won't engage


part time or awd ?
do no engage part time 4wd on dry pavement.!! only on ice or dirt.
do post what your tires are touching? dirt or pavement????????

if stuck in 4L , on dry pavement , pull over to side of road, dirt
then shift out. if no dirt anywhere? sand or gravel or grass.?
then jack up one wheel then deselect 4Low. back do 2WD
options for your car, (do post what you have)
qoute sales brochure:
Those going 4WD can enjoy the standard Command-Trac II, or opt for the Selec-Trac II, featuring full-time AWD, 4WD Lo and a rearward-biased torque split. (end quote)

how you drive both cars, varies greatly.
in your glove box is an operators guide , did you read that yet
under how to drive in 4wd or awd.??????????

Apr 14, 2014 | 2011 Jeep Liberty

1 Answer

Wont go in four wheel drive


what does won't mean?
  1. The lamp don't come on. (the lamp can be out)
  2. actual 4wd fails , that is, the tires don't turn, up front,under power, id bet you didnt check? actual 4wd actions?

which one.? which 4wd do you have.? and what mode did you select.?
http://en.wikipedia.org/wiki/Jeep_four-wheel-drive_systems

on Part time, you cant drive on dry pavement in PT 4WD.
got Part time? I think not, but??? dont know for sure....
Guessing:
i bet you have select track (no GRAND in title)
quote:
Selec-Trac offers full-time all wheel drive in addition to the part-time 4WD of Command-Trac. Full-Time all wheel drive has the ability for the front and rear axles to rotate at different speeds, making driving on dry and wet surfaces possible year-round without shifting back to 2WD again. It still has the ability to lock the front and rear axles.
end quote
-----------------------------------------------------------------------------------

do not use COMMAND-trac on dry pavement. its for ice or offroad only.

Apr 08, 2014 | 2006 Jeep Cherokee Limited

1 Answer

4wheel drive stuck on


The NP231 transfer case, named "command-trac"
or
The NP242 transfer case, names "selec-trac"

if select trac, do say so
if old command trac, part time 4wd you messed up.
never put car in 4wd on dry pavement.

driving on what.?
dirt.
ice
or dry pavement. (dry means no ICE !!!)

the operators guide explains this.
here is better
http://www.jeepkj.com/forum/f196/meaning-4wd-part-time-29470/

Jan 29, 2014 | 2003 Jeep Liberty

1 Answer

All wheel drive isn't working, 4 wheel drive is


I think im having the same problem. I just bought a 2000 grand laredo selec trac 100,000 miles,in full time4wd front drive shaft spins but jeep dont move in part time and lo 4wd it will move but still in 2wd?????? any answers

Mar 06, 2013 | 2004 Jeep Grand Cherokee

1 Answer

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

Jan 03, 2010 | 1996 Jeep Cherokee Country

2 Answers

The car jumps when the wheels are turned left or right


you need to have the front axles checked or replaced,they are not freely turning

Dec 28, 2009 | 1998 Jeep Grand Cherokee

1 Answer

95 Grand Cherokee front drivetrain


Hi Terrell,

First off, thanks for the detailed description of your problem. I wish they were all as well written as yours.

It's tough not being able to hear the noise it's making. Luckily I can draw parallels to my own experiences with GC's. Mine has 'Select-Trac', which like your 'Command-Trac', enables us to shift on the fly to 4WD. Meaning, we don't have to stop, get out, lock the hubs, get back in then shift to 4WD. Also like yours, my front end was making some noise.

What was up with mine: The 'Select-Trac' on my G.C. is a lever type switch on the center console. When I switch from 2WD to 4WD it routes a vacuum line to an actuator which engages the transfer case. The moving parts are all near the T-Case. While in 4WD, going any faster than a crawl I'd hear a mild grinding/whirring sound. It increased with speed, all but disappeared as I decelerated and made me crazy.

What it turned out to be was a Vacuum leak. The 'bellows' (for lack of a better description) type actuator was only partially engaging the the 4WD. Enough to lock the drive train, not enough to fully mesh the gears resulting in all sorts of worrisome noises. I found and fixed the leak, adjusted the range on the mode rod and that was it.

You're thinking, 'That's special'.

Well here's the parallel.
Command-Trac is also vacuum actuated. The difference is it engages your hubs from the the front axle by means of a 'shift fork'. The technical name is the 'Command-Trac Axle Shift Motor'.
When applied, the vacuum actuator moves the fork one way or the other, engaging or disengaging the hubs.

From your excellent diagnosis, it sounds like 4WD isn't fully disengaging.
You were correct about the front drive shaft. It should not be spinning while in 2WD.

Qualifiers: Is the grinding sound different at low speeds? While making sharp turns?

Have another look with these new facts in mind. Check vacuum lines, lubricant in the axle.

If you get me your engine size, tranny type, etc. I can probably scare up some vacuum diagrams (on the off chance you need them).

I hope this opens new doors for you.
Comment me back with what you come up with.
Good luck buddy.
Mike

Oct 14, 2008 | 1995 Jeep Grand Cherokee

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