1994 Jeep Cherokee 4WD Automatic Transmission questions

Hi,
My '94 Jeep Cherokee 4.0L Inline 6 cyl, 4WD w/ Automatic Transmission
is in need of a new transmission. I decided to pick up a used 1 from a
junk yard.

A couple of questions:
1.) Does my Cherokee have Command-Trac or Select-Trac, and does that
matter as far as picking the transmission?

2.) Will a transmission from a '92 Grand Cherokee fit it (a local junk
yard has 1 of those in stock now). Also, can anyone tell which types &
years of Jeeps have the same type of transmissions? For example, will
a '96 transmission fit a '94 Cherokee, etc? I had heard that Jeep used
the same type of transmission over the course of several years, and,
perhaps on multiple vehicles (regular Cherokee, Grand Cherokee, etc).
Can anyone verify this?

I have tried to find the answer to these questions on the internet, to
no avail - I was searching online when I found this newsgroup, and
started searching through it & haven't been able to find the answer to
my specific questions, so if someone could help me out, I would be
most appreciative.

Thanks,
brookman1973

On 12 Feb 2005 18:04:34 -0800, "brookman1973" >
wrote:

>Hi,
>My '94 Jeep Cherokee 4.0L Inline 6 cyl, 4WD w/ Automatic Transmission
>is in need of a new transmission. I decided to pick up a used 1 from a
>junk yard.
>
>A couple of questions:
>1.) Does my Cherokee have Command-Trac or Select-Trac, and does that
>matter as far as picking the transmission?
>
>2.) Will a transmission from a '92 Grand Cherokee fit it (a local junk
>yard has 1 of those in stock now).

I can take a stab at some of your questions. I don't have the info on
the '94, but I do have some on the '93. Don't think it's different
for '94.

The Grand Cherokee used theNPG231 Command-Trac, NPG242 Selec-Trac and
the NPG 249 Quadra-Trac. I don't know what the G stood for (Grand?)

The Cherokee used the NP231 Command-Trac and the NP242 Selec-Trac.
The Selec-Trac required the auto transmission. You probably have the
Select-Trac.

Command-Trac is a part time transfer case with 2WD, 4WD High and 4WD
Low settings. Selec-Trac is a full-time transfer case with 2WD, 4WD
High Full-Time, 4WD High Part-Time and 4WD Low settings. You should
be able to tell by looking at your shift lever markings.

Dick

New Process Gear

"Dick" <LeadWinger> wrote in message
...
> On 12 Feb 2005 18:04:34 -0800, "brookman1973" >
> wrote:
>
>>Hi,
>>My '94 Jeep Cherokee 4.0L Inline 6 cyl, 4WD w/ Automatic Transmission
>>is in need of a new transmission. I decided to pick up a used 1 from a
>>junk yard.
>>
>>A couple of questions:
>>1.) Does my Cherokee have Command-Trac or Select-Trac, and does that
>>matter as far as picking the transmission?
>>
>>2.) Will a transmission from a '92 Grand Cherokee fit it (a local junk
>>yard has 1 of those in stock now).
>
> I can take a stab at some of your questions. I don't have the info on
> the '94, but I do have some on the '93. Don't think it's different
> for '94.
>
> The Grand Cherokee used theNPG231 Command-Trac, NPG242 Selec-Trac and
> the NPG 249 Quadra-Trac. I don't know what the G stood for (Grand?)
>
> The Cherokee used the NP231 Command-Trac and the NP242 Selec-Trac.
> The Selec-Trac required the auto transmission. You probably have the
> Select-Trac.
>
> Command-Trac is a part time transfer case with 2WD, 4WD High and 4WD
> Low settings. Selec-Trac is a full-time transfer case with 2WD, 4WD
> High Full-Time, 4WD High Part-Time and 4WD Low settings. You should
> be able to tell by looking at your shift lever markings.
>
> Dick
>
>
>
>

id like to think your whole problem is that u r driving a jeep 4 leter
NEWS FLASH they suck

D-WALL did squat loudly:

<snip nothing of value>

Hey kid, go back to playing with your dolly
and quit bugging your elders.

--
DougW

OK. What is the difference between the NPG and NP transfer cases?
Assuming they are both New Process.

On Sun, 13 Feb 2005 03:59:39 GMT, "Jp Davis" >
wrote:

>New Process Gear
>
>"Dick" <LeadWinger> wrote in message
.. .
>> On 12 Feb 2005 18:04:34 -0800, "brookman1973" >
>> wrote:
>>
>>>Hi,
>>>My '94 Jeep Cherokee 4.0L Inline 6 cyl, 4WD w/ Automatic Transmission
>>>is in need of a new transmission. I decided to pick up a used 1 from a
>>>junk yard.
>>>
>>>A couple of questions:
>>>1.) Does my Cherokee have Command-Trac or Select-Trac, and does that
>>>matter as far as picking the transmission?
>>>
>>>2.) Will a transmission from a '92 Grand Cherokee fit it (a local junk
>>>yard has 1 of those in stock now).
>>
>> I can take a stab at some of your questions. I don't have the info on
>> the '94, but I do have some on the '93. Don't think it's different
>> for '94.
>>
>> The Grand Cherokee used theNPG231 Command-Trac, NPG242 Selec-Trac and
>> the NPG 249 Quadra-Trac. I don't know what the G stood for (Grand?)

I'd like to thank everyone for the responses so far (well, except for
the 1 troll) -

So, I went out & looked at my 4 WD shifter, and it has these options:
2H, 4H, N, & 4L - so does that mean it's a Command-Trac or Select-Trac?

Also, I'm afraid I still am unsure about the similarities of the
different transmissions - I'm still unsure if a tranny from a '92 Grand
Cherokee will work in a '94 Cherokee - or is the junk yard dealer just
trying to screw me over?

Thanks,
brookman1973

You have Command-Trac. I had Select-Trac and I had another option on my
transfer case selector (It's been a few years since I've been in an XJ),
sorry I'm not much help other than that.

Here we go.
Select-trac transfercase selectors
http://xjconnection.jtv.cc/jeep_select_trac_image02.jpg
http://xjconnection.jtv.cc/select_trac_xj93sport.jpg

When I did have the XJ, I had great help from
http://www.off-road.com/jeep/cherokee/

But as far as differences between years and the ability to interchange
between models, I'd check with other wreckers, for a "second opinion". Or
even ask the Jeep dealer's service guy for info.


"brookman1973" > wrote in message
oups.com...
> I'd like to thank everyone for the responses so far (well, except for
> the 1 troll) -
>
> So, I went out & looked at my 4 WD shifter, and it has these options:
> 2H, 4H, N, & 4L - so does that mean it's a Command-Trac or Select-Trac?
>
> Also, I'm afraid I still am unsure about the similarities of the
> different transmissions - I'm still unsure if a tranny from a '92 Grand
> Cherokee will work in a '94 Cherokee - or is the junk yard dealer just
> trying to screw me over?
>
> Thanks,
> brookman1973
>

Been almost an hour and I had hoped someone else might be able to answer
that for me
Google wasn't much help for me, that or I need to input a different query...
But I'm thinking there really isn't any difference other than the personal
preference of the person using the term.

Just a wild stab in the dark. I'm useless That or really tired.

"Dick" <LeadWinger> wrote in message
...
> OK. What is the difference between the NPG and NP transfer cases?
> Assuming they are both New Process.
>
> On Sun, 13 Feb 2005 03:59:39 GMT, "Jp Davis" >
> wrote:
>
>>New Process Gear
>>
>>"Dick" <LeadWinger> wrote in message
. ..
>>> On 12 Feb 2005 18:04:34 -0800, "brookman1973" >
>>> wrote:
>>>
>>>>Hi,
>>>>My '94 Jeep Cherokee 4.0L Inline 6 cyl, 4WD w/ Automatic Transmission
>>>>is in need of a new transmission. I decided to pick up a used 1 from a
>>>>junk yard.
>>>>
>>>>A couple of questions:
>>>>1.) Does my Cherokee have Command-Trac or Select-Trac, and does that
>>>>matter as far as picking the transmission?
>>>>
>>>>2.) Will a transmission from a '92 Grand Cherokee fit it (a local junk
>>>>yard has 1 of those in stock now).
>>>
>>> I can take a stab at some of your questions. I don't have the info on
>>> the '94, but I do have some on the '93. Don't think it's different
>>> for '94.
>>>
>>> The Grand Cherokee used theNPG231 Command-Trac, NPG242 Selec-Trac and
>>> the NPG 249 Quadra-Trac. I don't know what the G stood for (Grand?)
>

Jp Davis did pass the time by typing:
> Been almost an hour and I had hoped someone else might be able to answer
> that for me
> Google wasn't much help for me, that or I need to input a different query...
> But I'm thinking there really isn't any difference other than the personal
> preference of the person using the term.

The tranny changed in the ZJ during the 92-93 production year.
They went between the AW4 and 42RE, both have their quirks.
This is the CPS sensor for the 42RE
http://members.cox.net/wilsond/cps/
and the AW4
http://members.cox.net/wilsond/Fixes/sensor-cps-new.jpg

Given they switched in production the mechanics are probably
identical. Even so I have no idea if the ZJ tranny will fit an
XJ. The dealer parts counter or maint shop might have a crossreference.


2H, 4H, N, & 4L is the NP231 part-time case (good for off-roading,
but don't use 4H or 4L on pavement)

2H|
|
N __|4H
|
|
|4L

The 242 is a part-time/full-time case (best of both worlds)

|2wd
|
|4part
|_
|4full
N |_
|
|4L


--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
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