ECM swap? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > ECM swap?

Alloy usa heavy duty ball joint kitsNEW!! HMF 50"-52" light bar mounting brackets!! ZONE 4.25" combo lift for TJ available at Rockridge4w

Reply
Unread 02-27-2011, 08:02 PM   #1
g4x4xgeoff
Registered User
1994 YJ Wrangler 
 
Join Date: Mar 2010
Location: Rhode Island
Posts: 1,611
ECM swap?

last step of my tf-999 to ax-15 swap, the ECM needs some attention.

I either need to trick it into thinking the automatic is still there, or replace it with a manual ECM.

what would you do? Keep the current ECM, and trick it (and how), or swap out a manual ECM (will it just snap into the harness?)

__________________
[QUOTE=Hurley91;11462515]I could be drunk, high, raped and almost dead.... and I could still recognize it.[/QUOTE]


[url]http://www.jeepforum.com/forum/groups/ri-jeeps/[/url]

[COLOR="Black"][CENTER][SIZE="4"][FONT="Showcard Gothic"][COLOR="Black"][URL="http://groups.jeepforum.com/Built_Not_Bought"][COLOR="Black"]Built Not Bought #435[/COLOR][/URL][/FONT][/SIZE][/COLOR][/CENTER][/COLOR]
g4x4xgeoff is offline   Reply With Quote Quick reply to this message
Unread 02-28-2011, 07:36 AM   #2
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,608
Keep it and just ground the nuetral saftey switch. Its the same controller.
Que89YJ is offline   Reply With Quote Quick reply to this message
Unread 02-28-2011, 12:54 PM   #3
g4x4xgeoff
Registered User
1994 YJ Wrangler 
 
Join Date: Mar 2010
Location: Rhode Island
Posts: 1,611
Quote:
Originally Posted by Que89YJ View Post
Keep it and just ground the nuetral saftey switch. Its the same controller.
Easy enough, are there any other concerns you can see, orhappen to know which wires off hand?
__________________
[QUOTE=Hurley91;11462515]I could be drunk, high, raped and almost dead.... and I could still recognize it.[/QUOTE]


[url]http://www.jeepforum.com/forum/groups/ri-jeeps/[/url]

[COLOR="Black"][CENTER][SIZE="4"][FONT="Showcard Gothic"][COLOR="Black"][URL="http://groups.jeepforum.com/Built_Not_Bought"][COLOR="Black"]Built Not Bought #435[/COLOR][/URL][/FONT][/SIZE][/COLOR][/CENTER][/COLOR]
g4x4xgeoff is offline   Reply With Quote Quick reply to this message
Unread 02-28-2011, 01:18 PM   #4
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,608
Wire from Pin 30 of the ECU:
2009-11-16_105351_93_jeep_ecm.gif  
Que89YJ is offline   Reply With Quote Quick reply to this message
Unread 02-28-2011, 06:16 PM   #5
Mark05059
Registered User
1989 YJ Wrangler 
 
Join Date: Mar 2009
Location: quechee Vermont
Posts: 4,351
Quote:
Originally Posted by Que89YJ View Post
Wire from Pin 30 of the ECU:
I was looking for this yesterday
__________________
1998 ZJ 5.2 Auto

1989 Wrangler Black Bone Stock 2.5l 5spd
/l , [____],
|---L--[]lllllll[]-
()_) ()_)==O=)_)
Mark05059 is offline   Reply With Quote Quick reply to this message
Unread 03-01-2011, 10:41 AM   #6
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,608
Cut the wire from pin 30 near the ECU and run it to a good chasis ground near the ECU.

The spedo input is necessary for the ECU to function properly and for speed to work on the cluster. Here are 2 links for info:
http://www.jeepforum.com/forum/f12/4...ection-963222/
http://www.jeepforum.com/forum/f12/h...73/index2.html

The crank sensor should be located here:
http://www.jeepforum.com/forum/f12/r...o-fire-650259/

Im not sure what you got the AX 15 out of but the flywheel and the Crank sensor are very important. The fly wheel is like a tone wheel for the crank sensor. Every rotation send a specific sequence of pulses though the crank sensor to the ECU. The fly wheel must be from a 91-95 YJ or an equivelent XJ with the same engine. It will not start if it isnt! Also the location of the crank sensor is critical in setting the timing. It should be located here:
http://www.jeepforum.com/forum/f12/4...x-15-a-928285/
http://www.jeepforum.com/forum/f12/r...o-fire-650259/

Post back here to your thread if you have any more questions. I hope it helped.
Que89YJ is offline   Reply With Quote Quick reply to this message
Unread 03-01-2011, 01:55 PM   #7
g4x4xgeoff
Registered User
1994 YJ Wrangler 
 
Join Date: Mar 2010
Location: Rhode Island
Posts: 1,611
Thanks man,

flywheel came out of a 94 4.0 so we're good on that aspect, got the cps ready to go in,

hopefully all goes well tonight!
__________________
[QUOTE=Hurley91;11462515]I could be drunk, high, raped and almost dead.... and I could still recognize it.[/QUOTE]


[url]http://www.jeepforum.com/forum/groups/ri-jeeps/[/url]

[COLOR="Black"][CENTER][SIZE="4"][FONT="Showcard Gothic"][COLOR="Black"][URL="http://groups.jeepforum.com/Built_Not_Bought"][COLOR="Black"]Built Not Bought #435[/COLOR][/URL][/FONT][/SIZE][/COLOR][/CENTER][/COLOR]
g4x4xgeoff is offline   Reply With Quote Quick reply to this message
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.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

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.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.