1999 4L & 2.5 trans - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-29-2010, 04:54 PM   #1
Newb
 
Join Date: Aug 2010
Posts: 3
1999 4L & 2.5 trans

I am swapping out a 1999 wrangler 4.0L engine and putting it into a 1999 wrangler that had a 2.5L. Are the transmissions the same or do i need to swap out the trans as well?

OVERTHETOP is offline   Quote
Old 08-29-2010, 05:04 PM   #2
Jeeper
 
98-4Banger's Avatar
 
Join Date: Aug 2010
Location: Laval, QC
Posts: 131
be safe switch the trans too. im sure the 4.0l will work better with its stock trans

__________________
1 Toyota Yarris less on your roads Thanks to me I didnt even feel him hitting me but once i saw him slowly being eating by my JEEP i got pissed he scratched my bumper and wheel.
98-4Banger is offline   Quote
Old 08-29-2010, 05:36 PM   #3
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 37,268
Quote:
Originally Posted by OVERTHETOP View Post
I am swapping out a 1999 wrangler 4.0L engine and putting it into a 1999 wrangler that had a 2.5L. Are the transmissions the same or do i need to swap out the trans as well?
The 2.5L uses the smaller light-duty Aisin AX-5 transmission and the 4.0L uses the Aisin AX-15. You'll have to swap out the transmission as well as the ECM and engine wiring harness. The 4.0L can't even be mounted to the AX-5 for a short-term solution.
__________________
When you have a choice, buy American.

Jerry Bransford is online now   Quote
Old 08-29-2010, 05:46 PM   #4
Jeeper
 
98-4Banger's Avatar
 
Join Date: Aug 2010
Location: Laval, QC
Posts: 131
Quote:
Originally Posted by Jerry Bransford View Post
The 2.5L uses the smaller light-duty Aisin AX-5 transmission and the 4.0L uses the Aisin AX-15. You'll have to swap out the transmission as well as the ECM and engine wiring harness. The 4.0L can't even be mounted to the AX-5 for a short-term solution.
What i meant to say.. lol
__________________
1 Toyota Yarris less on your roads Thanks to me I didnt even feel him hitting me but once i saw him slowly being eating by my JEEP i got pissed he scratched my bumper and wheel.
98-4Banger is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
1990 Jeep AX-15 6cl M Trans story from Hell Peloquin YJ Tech Forum 11 06-14-2012 06:04 PM
Trans Adapter Leak 99 TJ ABSOLUTnie TJ General Discussion Forum 2 12-15-2011 08:38 PM
Fellow Ohio Jeepers Help fick15 Ohio Jeep Forum 11 01-19-2010 10:56 PM
2000 2.5 with auto trans question. motokeen TJ Tech Forum 1 08-17-2009 10:39 PM
Trans idea YjMopower YJ General Discussion Forum 23 07-18-2009 11:35 PM



Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 12:17 AM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC