computer upgrade? (94-->96) - JeepForum.com
 
LinkBack Thread Tools
post #1 of 13 Old 07-15-2013, 12:27 PM Thread Starter
longtro
Registered User
1994 XJ Cherokee 
 
Join Date: Apr 2013
Location: Vancouver
Posts: 100
computer upgrade? (94-->96)

I have a 94 stocker. I want to add a scangauge or some thing similar.

so does a 96+computer just swap in? easy plug in swap or is there wiring hareness difference?

longtro is offline  
Sponsored Links
Advertisement
 
post #2 of 13 Old 07-15-2013, 01:05 PM
79chiefs
Registered User
1988 XJ Cherokee 
 
Join Date: Dec 2012
Location: Lillington
Posts: 994
96+ is obd2 so i would say no they are different, 95- is obd1. Just MY thoughts

99WJ Laredo I6-A 2wd
88XJ-Building on a budget.
95 E34 540i-DD
79chiefs is offline  
post #3 of 13 Old 07-15-2013, 10:24 PM
RockRodHooligan
Web Wheeler
 
RockRodHooligan's Avatar
1996 XJ Cherokee 
 
Join Date: Mar 2007
Location: Noblesville
Posts: 5,450
A 96 is going to be the best Connor for parts if you want to switch to OBD2, just know that the 96 wiring has more in common with the 95, 94 is different than both.

96 XJ:Parking lot Pre-Runner

89 MJ: Project: Ground up - Sold
01 XJ: Project: Silverback - Totaled

Quote:
Originally Posted by Apex View Post
***** inches...
Good god man. Indyorv :rofl: d**k and fart jokes. :rofl:
RockRodHooligan is offline  
post #4 of 13 Old 07-16-2013, 11:11 AM Thread Starter
longtro
Registered User
1994 XJ Cherokee 
 
Join Date: Apr 2013
Location: Vancouver
Posts: 100
Quote:
Originally Posted by RockRodHooligan View Post
A 96 is going to be the best Connor for parts if you want to switch to OBD2,
... Yes. I was aware that ODB2 Was +96. I should have made that clear. I just wanted to know if the compter swap was a straight plug and play or not.
Quote:
Originally Posted by RockRodHooligan View Post
just know that the 96 wiring has more in common with the 95, 94 is different than both.
this is what I was curious about. so the 94 is different! is wiring the wiring diff 96+ or just a differnt pin block or Map(right word?)?

Thanks rot rod!
longtro is offline  
post #5 of 13 Old 07-16-2013, 11:17 AM Thread Starter
longtro
Registered User
1994 XJ Cherokee 
 
Join Date: Apr 2013
Location: Vancouver
Posts: 100
I forgot to mention it is an automatic.

I hope to either swap in a standard with in the year or over ride the controls and have the power to fully control all the shifting of my 4 speed auto.
longtro is offline  
post #6 of 13 Old 07-16-2013, 11:25 AM
79chiefs
Registered User
1988 XJ Cherokee 
 
Join Date: Dec 2012
Location: Lillington
Posts: 994
Here is the answer. No. I did some research and you need a computer with the same part number, i GUARANTEE a 96 part number is different.
Edit--After more research i believe ANY computer 92-95 will fit. 91> is renix, and 96< is obd2.

99WJ Laredo I6-A 2wd
88XJ-Building on a budget.
95 E34 540i-DD
79chiefs is offline  
post #7 of 13 Old 07-17-2013, 04:21 PM Thread Starter
longtro
Registered User
1994 XJ Cherokee 
 
Join Date: Apr 2013
Location: Vancouver
Posts: 100
Quote:
Originally Posted by 79chiefs View Post
Here is the answer. No. I did some research and you need a computer with the same part number, i GUARANTEE a 96 part number is different.
Edit--After more research i believe ANY computer 92-95 will fit. 91> is renix, and 96< is obd2.
thank you I will have to just do some modifiacations to do the upgrade.
longtro is offline  
post #8 of 13 Old 07-17-2013, 07:26 PM
KF4SQB
Registered User
1994 XJ Cherokee 
 
Join Date: Nov 2009
Location: SouthWest Georgia
Posts: 561
The plugs that attach the wiring harness to the computer is different, if I'm not mistaken. I'm sure it could be done, but it would take some harness splicing.

4-wheeling: because football, basketball, baseball, and golf only require one ball!


Confidence: The feeling you get just before you fully understand the situation!
KF4SQB is offline  
post #9 of 13 Old 07-24-2013, 08:19 AM Thread Starter
longtro
Registered User
1994 XJ Cherokee 
 
Join Date: Apr 2013
Location: Vancouver
Posts: 100
Quote:
Originally Posted by KF4SQB View Post
The plugs that attach the wiring harness to the computer is different, if I'm not mistaken. I'm sure it could be done, but it would take some harness splicing.
well I am intent on getting odb2 so I will muster up my courage and figure it out. I will start looking up the schematics
longtro is offline  
post #10 of 13 Old 07-25-2013, 10:15 AM
KF4SQB
Registered User
1994 XJ Cherokee 
 
Join Date: Nov 2009
Location: SouthWest Georgia
Posts: 561
I don't have anything for the '96, but here's the pinout for the '94 PCM connector.

pcm.pdf

4-wheeling: because football, basketball, baseball, and golf only require one ball!


Confidence: The feeling you get just before you fully understand the situation!
KF4SQB is offline  
post #11 of 13 Old 07-25-2013, 04:50 PM Thread Starter
longtro
Registered User
1994 XJ Cherokee 
 
Join Date: Apr 2013
Location: Vancouver
Posts: 100
Quote:
Originally Posted by KF4SQB View Post
I don't have anything for the '96, but here's the pinout for the '94 PCM connector.

Attachment 649924
Thanks! there is a 97 4.0l auto at the pull a part.... just ****ing ****ty driving for a couple of hours in the heat to go look to see if it is there.
longtro is offline  
post #12 of 13 Old 08-16-2013, 04:11 PM Thread Starter
longtro
Registered User
1994 XJ Cherokee 
 
Join Date: Apr 2013
Location: Vancouver
Posts: 100
have not gotten any forther with this. : /
and remembered that the Cherokee upgraded from distributors some where in the years I was hoping to get the computer.

from FOUR WHEELER net article:

....and in 1996, OBD2 (On Board Diagnostics 2) made its debut. Many hated it at the time, and still hate in now. OBD2 monitors and controls more aspects of the engine than the previous generation did, which can make transmission swaps and blowers harder to get right. On the one hand, OBD2 will let you get away with less power adding before throwing the dreaded CEL light. On the other hand, if something goes wrong, it is easier to plug in a scan tool to retrieve the code and replace the widget that went bad. If you like having more control of your XJ, stick with a '95 and earlier model.

There were up to three major wiring harness revisions in 1997. No matter who you talk to, everyone agrees that unless you are leaving it completely alone, you might want to avoid a '97. We've been in and out of most of these, and it's clear that it took Chrysler until late 1997 to figure out the wiring, make it neat, orderly, and uniform from one month to the next.

2000 is the upgrade to coil on plug ignition.

Last edited by longtro; 08-16-2013 at 05:03 PM.
longtro is offline  
post #13 of 13 Old 12-09-2013, 11:48 AM Thread Starter
longtro
Registered User
1994 XJ Cherokee 
 
Join Date: Apr 2013
Location: Vancouver
Posts: 100
Quote:
Originally Posted by KF4SQB View Post
I don't have anything for the '96, but here's the pinout for the '94 PCM connector.

Attachment 649924
hey there.. Thanks alot for this again!
is the 'signal ground' from the alt?
I am wondering if This is where my over charging problem lies.
longtro is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome