Question about 1998 Jeep Cherokee

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I think its tranny problem but i have a 98 xj aw4 tran 4.0 that will not shift into ne other gear but frist

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Sounds like the synchronizers are shot. a decent mechanic can replace them,but you may be better off with a junkyard tranny,financially.

Posted on Apr 30, 2010


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Posted on Jan 02, 2017


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1 Answer

I think my 1995 jeep grand Cherokee has an electrical problem we've tried everything from changing censors to changing trans fluid an filter an it still won't shift an takes off in 2nd gear also the over...

still won't shift The word button , tips hand that it is a automatic trans,
but not which one. they had 2 that year, 42/44re and
the AW4 box, has a TCM (tranny brain.)
and all tranny brains go to limphome mode, (skipping or freezing 2nd) if inputs are WRONG.
the TCM can be scanned, to see why, skipping this step misses the boat,

I have the 1995 FSM book. chapter 21.
42 or 44RE trans? is that yours. the tag on side tells you what it is. look for the tag, and learn what car run for a drive-line.

see" trans... opt" here. ZJ

page 21-45 is diagnosis page, in the FSM book.
ON car service, and step 2 is scan it. (step one is fuses. levels)
ever consider read this book on this car and this trans?

here is the non tool way,

i use a Innova 3140 , tool that does jeep 1993-95, OBD1
i have not tried, to see if it will log a trans DTC;s
using a real scan tool , helps greatly to see all TCM codes.
most TCM can do 10 error code, all very revealing.

make sure the transmission is grounded, with a good ground strap
seen people replace trans 3 times, then do strap last. sad.

Trans issues are many
(ill skip bad trans)
  1. wiring bad, from TCM to trans, or from TCM to all sensors. to it.
  2. bad TCM
  3. lost power 12vdc to TCM for any reasons.
  4. lost ground to trans or TCM.

a scan tool that can scan this back in 1995 was the DRB-ii

Mar 24, 2015 | 1995 Jeep Grand Cherokee

2 Answers

Where's the governor censor on my jeep grand Cherokee

In the transmission. Not hard to replace , but is very messy. Remove the transmission pan. The governor is on the passenger side. Three bolts to remove to replace the sensor.

Mar 22, 2015 | Jeep Grand Cherokee Cars & Trucks

1 Answer

I have a 98 jeep XJ

what country are you in, USA/? we are
what engine is there, ? we have like 2, but more outside USE
must we guess both facts?
so the engine runs great that it, all things ok but the trans fails to shift due to obvious , limphome (limp-in) mode ! that it?
You just want shifting to work, right>?

what is the nss, ( that is not an legit term)(VSS???)
(sure tranny bad , VSS swapped, but was not it)
sure.... as is the case most times here. not scanned correctly

first off learn rule one on EFI cars
you can NOT ERASE problems, or you can't erase REALITY.
problems are cured then , you push reset and see if they return
if they DO? THEY ARE REAL and must be corrected.

p-700 means do a full scan of the Tranny TCM to see all errors there
you scan tool is weak. my guess and can not do jeep factory codes
that transmission TCM is in limphome mode.
by light you meant CEL, check engine Lamp that is its name
and comes on for smog fail and other things, (gross errors DRIVE LINE all)
p0700 means (TCM has errors stored, only)
p0100?? that must be a wrong code, written down. says export only.
143 = O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
the oxy sensor B1S3 reads, 0volts all the time, so is bad.
did you replace S3 or the wrong sensor.
on calif 4L it has a split exh, man with 3 sensors, is that your engine? if yes, its the extereme rear o2, (smog only sensor)
S3 is CAT check sensors.

XJ jeeps
we have 2 engines, only in USA< (EPA regs)
2.5L and 4.0L GAS only.
and rule 2, is the transmissions match engines, power. rating!
so there is no one transmission fits all engines.
I owned a 99XJ so know it well.
the export car had a 2.5L diesel , a total different setup end to end.
i have the USA service manual open
there is no p0100 code on any Gas engine , usa.
type or is this DIESEL, post?> why not post engine and fuel first.
that tells me drive line (a/t)

lets change your post
b: scan it with a real scan tool, not a toy reader.

here are the jeep works on P0700
This SBEC III or JTEC DTC indicates that the EATX or
Aisin controller has an active fault and has illuminated the
MIL via a CCD (EATX) or SCI (Aisin) message. The
specific fault must be acquired from the EATX via CCD or
from the Aisin via ISO-9141.

takes a matching scan tool to scan this box
ISO-9141. is such a tool, spec.
and needs to read P17xx codes (jeeps) too, or you fail.

our 2.5L gas uses the 30RL trans.
the 4.0L gas (petrol) use the AW4 ,tranny "aisin warner box" with TCM brain
what the diesel uses, is not in my book (USA SM)

now my recommendation
drive to any shop
ask for the transmission to be scanned
do not pull your battery cable.
do not push reset. on your cheap or tool old tool.
leave the codes stored in the TCM so the man can scan it
and win.
oddly my jeep book does not explain, oxy sensor 1/3 at all. just that it reads 0v all the time 143 code, odd that.
but no engine or trans stated by you or country

Mar 29, 2017 | 1998 Jeep Cherokee

1 Answer

Won't shift out of first gear

good diagnosis that is correct if the vehicle speed sensor is not working the speedo doesnt work and the trans doesnt know when to shift

Jul 17, 2009 | 1998 Ford Windstar

4 Answers

98 Ford Windstar Won't shift out of 1st gear

Let an expert fix it for you. There are more issues than you think wrong with your car.

Have this resource handy for the scan results

Rate this fixya.

May 29, 2009 | 1998 Ford Windstar

2 Answers

Tranny slips & wont shift past 2nd gear

Ok, you will need to first check the fluid level in this transmission. if the trans is sealed, you will need to take to the dealer for a fluid check. assuming that the fluid level is proper, this will usually be caused by a faulty transmission control module and faulty shift solenoids as well. these devices are located on and inside the trans and i recommend testing each device for flaws.

Most slips are the result of gear ware but, the solenoids and TCM will cuse this issue as well.

May 21, 2009 | 1998 Acura CL

2 Answers

I have a 1997 Jeep Cherokee, stuck in 2nd...

all answers USA on USA cars,only. (exports are diffr)
so if you didnt scan it when it fails, how would you ever find the truth? (if no errors. then it can be pure mechanical failure)
the car has TCM a tranny brain.
its covered in the SM, read that chapter yet.
on newer cars if the Tranny overheats or engine both can go to LIMPHOME< but your car is not even close to new, is it?
Jeep calls that LIMP-in.
my guess (sux) is its the 4.0L engine with matching AW4 box
it wise to know whats there first. before trying to understand it
a FACT !
so did you google search AW4 boxes. , i bet not.
but they are unique. as all different boxes are.

is the CEL lamp glowing running, Check engine lamp
PDC fuse 16 ok (4L,aw4) TCM power, must be good at all times.

is the throttle valve cable to transmission stuck out?
if it does, the TCM and trans will either go nuts, or shift way late.

the TCM shifts using solenoids, we check that the signals to said solenoid actually do go to the correct voltage levels
in to 3rd. (you said stuck in 2nd)
if that is ok, then the TCM did it job and the problem is INSIDE the box. end story, we use remote test meters to monitor wires driving.


chapter 21 and 8w are free to read here any time you wish
posted over 300 times the Jeep Bible (SM)

click XJ

Mar 23, 2017 | 1997 Jeep Cherokee

3 Answers

My 1989 Jeep with AW4 transmission does not downshift or ?

This model has a tranny computor under the dash on the right side screwed to the bottom of the dash. If I remember correctly, there is also an inline fuse attached to the harness. Check the fuse.

Feb 12, 2009 | 1989 Jeep Cherokee

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