Question about Jeep Grand Cherokee

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I have a 2003 Jeep Grand Cherokee with the Quadra Trac 2. The jeep should be all wheel drive all the time. However In notice driving on dirt roads on slight grade my tires spin. If i stop and put the jeep in 4 low it works just fine. Any suggestions?

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  • Brandonh Oct 03, 2010

    So apparently the Quadra Trac 2 isn't the equivalent of 4 high? So rain, snow, mud will all require 4 low thus winding my tranny very high?

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  • Jeep Master
  • 11,800 Answers

The Jeep has all wheels powered all the time - the slip is caused by the fact that the differentials aren't very well controlled so a wheel is allowed to spin - this is done to provide a better comfort in normal driving situations. On low grip situations this is normal behaviour - the differentials aren't completely locked up.
When you engage the LOW gearing a different setup program is loaded - in this one the efficiency of the transmission takes precedence so all the controls are enhanced whatever the discomfort they cause - now the differential will be locked and the wheel will not slip.
As i said all this is normal behaviour, nothing to worry about.

Posted on Oct 03, 2010

  • Azrael SRL Oct 03, 2010

    No, Quadra Trac 2 is the name of the transmission system.
    Actually its never an actual 4x4 = the front axle is powered thru a viscocoupler that is engaged progressively only when needed. In the rest of the time the Jeep is basically a 2x4. That is done to reduce the fuel use .
    Yes, in those conditions you must always engage the LOW setting and drive at reduced speed.

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1 Answer

2002 jeep grand cherokee owners manual


the 2002 grand Cherokee WJ jeep,
can be quada-drive ?
or quadra-trac- II NV247 (transfer case)
regardless of that...

stay out of 4wd low,
use low only on ice or dirt, dead slow.
it will grind a bit going into low.
low is never to be used on dry pavement.
dry means, no ice.
the book on car is clear, its for rock crawling off road only. (super low speed)
, put at least on tire on dirt then drive slow and shift out of 4wd LOW, lock,.
if not, damage to the drive line can happen
do not attempt this moving fast ever, (into or out of LOW)

RTM, read it 2 times.

Dec 13, 2016 | 2002 Jeep Grand Cherokee

1 Answer

4 all and 4Lo


huh?
is that a question?
what 4wd system do you have?
quadra drive, or quadra trac 1 or 2?????
apples and orange different; do tell?
also tell what tires are touching, pavement,ice or dirt.
matters

here is the book, wj, free posted over 200 times, here.

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

Jan 06, 2016 | 2000 Jeep Grand Cherokee

2 Answers

4 wheel drive is not working


so is AWD,? command trac or what trac?

no working means..... using or 4low,?
my wild guess: 1:
Quadra-Trac-II NV 247 Gerodisc system 1999+
got that? what you have for real MATTERS? we cant guess.
the 247 adds LimSlipDiff option to the system got that too>?
symptoms for working are>......
1: lamp dead.
2: lever stuck
3: tires x4 missing torque to earth?
1999 WJ jeep
4 steering binds up.?

say what is there.
and say what not working means , exactly
and say what tires are touching, (pavement , ICE or dirt)
we cant guess, road, either.

Mar 08, 2015 | 1999 Jeep Grand Cherokee

3 Answers

Does 2004 jeep grand cherokee have the 4x4 light


The best support site I have found for Dodge is here, Allpar Dodge Chrysler Plymouth Jeep and related cars minivans and trucks Look in the tech sections and you may find the answer or you can type in a question. Contrary to what one user posted, I have no affiliation with this website beyond having used it myself. Allpar Dodge Chrysler Plymouth Jeep and related cars minivans and trucks

Feb 14, 2015 | 2004 Jeep Grand Cherokee

1 Answer

Why can't my 2006 jeep go into 4 wheel drive?


are you on dirt? or pavement...????????????????????????
we cant answer until you answer what 4wd option you have.
if that makes no sense, then read the operators guide,
it tells you what's there and how to use it.
read that first, then ask questions,?
and if Part time 4wd?, it';s not to be used on dry pavement only ICE.

eg:

4WD: Select-Trac (or older Select-Drive has a slip coupling too, NP129/229) is AWD in that, "the "4Hi" setting the drive shafts were coupled together using a viscous-type coupler " this anti wind up slipper"
Watch out for exception 1: Select-Trac NP228 based jeeps, it does not have a viscous-type limited-slip coupling. It was used briefly in 1986.
Quada-Trac is full time 4WD (not in lock mode) has a real center differential to shift torque between front and rear. This is the best system , not just a slip clutch as above. Then went BACK to the slipper in 1980. (odd huh?) Up to 1998.
Quadra-Trac-II "4-All Time", "N" or neutral, and "4-Lo". In "4-All Time", torque is applied to the rear wheels under normal driving conditions.
If the rear axle starts rotating at a significantly higher rate than the front axle, hydraulic pressure builds up in the gerotor oil pump and causes the clutch pack, to progressively transfer torque to the front axle, until both axles return to the same speed
Quadra-Trac I was introduced in 2004-10, same as above but is automatic with no driver controls ,like above.
The Quadra-Drive system was introduced in 1999 and is based on the Quadra-Trac II system but adds limited slip differentials (the best full time system ,with great traction to all wheels all the time) 1999 to 04.
Quadra-Drive-II has electronic limited slip differentials or ELSDs 2005 up.

Aug 01, 2014 | 2006 Jeep Grand Cherokee

1 Answer

1999 jeep grand cherikee 4 wheel drive not working


You need to be more specific. To start, which 4 wheel drive system your jeep has? (Select Trac, Quadra Trac II or Quadra Drive)
Then: does it never work, or only in 4-Lo?

Dec 22, 2013 | 1999 Jeep Grand Cherokee

4 Answers

I have a 93 jeep grand cherokee laredo it has 4all time neutral and 4lo should i keep it in 4all time all the time or does that ruin it


Yes, Your Jeep is what is known as a Quadra-Trac. This type of cherokee is an all wheel drive model. 4 wheel all time is for everyday driving, Neutral completely dissconects the drive train from the transmission and will not move at all. 4 wheel low is more for off road conditions where traction is compromised. 4 wheel low should NEVER be used at speed above 15 miles an hour.

To the guy above: 4 wheel drive is designed for low end pulling power and safer handling on slippery road conditions. 4 wheel drive has NOTHING to do with how fast you go or how fast you stop. Don't post a comment if you clearly don't know the correct information.

Jan 10, 2010 | 1993 Jeep Grand Cherokee

1 Answer

1999 Jeep G C Quadra Trac keeps getting stuck in 4 wheel drive.


universal joint on the driveshaft may do this !
check transmission fluide as well.
good luck

Mar 31, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Turning sharply in parking lot vibration or rubbing feeling in the steering also in reverse on 2001 grande cherokee with quadra track 2


1st let me make sure I understand your Jeeps 4 wheel drive. I believe the quadra trac system is a full time 4 wheel drive, there is no 2 wheel drive setting, only a separate 4 Lo (for very slow speed). If this is correct, the problem is, the quadra trac system you have is supposed to compensate for any variations in wheel speed, whether it's driving in the snow, or cutting the wheels sharply to park on dry pavement. What u describe is typical behavior of a part time 4 wheel drive system. The problem is, your full time 4x4 should be compensating for this, and it's not. So, let me know if the above info about your 4wd is accurate (no part time 4wd setting, no 2wd setting, only full time 4wd and 4Lo setting. If it is, the system is not compensating for changes in the wheel slippage correctly.

Mar 21, 2009 | 2001 Jeep Grand Cherokee

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