2.5-4.0 swap is underway!! - Page 3 - 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 > TJ Wrangler Technical Forum > 2.5-4.0 swap is underway!!

FS: Wranger BRIGHT License Plate LED! Just $3! Great valueECGS DOTW - $100 off Yukon 8.8 C-Clip Eliminator KitNitro Gear Packages Now Available at Rockridge 4wd

Reply
Unread 07-25-2008, 03:27 PM   #31
gmbtj
Registered User
 
Join Date: Jun 2004
Location: Lexington, KY - Hopkinsville, KY
Posts: 437
Yeah, you need to get the engine harness AND computer from a 97-99 TJ. A 2000 works, but it is for the coil rail instead of the distributor type.

__________________
Gun Metal Blue Jeep Club Member #1
Low Output 4 Cylinder Jeep Club Member #1 (President)
1999 Four Banga Wrangla - NO MORE!!!! -Going in 4.6L Stroker - TF 727 - Dana 300 HD
Teraflex 3T w/ OME's on 32" BFG M/T's
AtoZ Yaffy Style rocker guards l Tuffy Series II Security Console l Zirgo "S-Blade" electric fan l PSC Trail corners w/ LED's l Hella 500's l Expensive Sound System
gmbtj is offline   Reply With Quote
Unread 07-25-2008, 04:07 PM   #32
RnEmOvr
Have Cummins, Will tow.
 
RnEmOvr's Avatar
1999 TJ Wrangler 
 
Join Date: Mar 2005
Location: Ft Stewart, Ga
Posts: 10,564
well crap, i guess im going shopping, so my engine will work i just need the newer harness and ECU?
__________________
My Jeep 2.5-4.0 Motor Swap, Very detailed Military Jeepers

Looking to swap my 4" springs for your 2-3" springs. PM for details.
RnEmOvr is offline   Reply With Quote
Unread 07-25-2008, 04:34 PM   #33
gmbtj
Registered User
 
Join Date: Jun 2004
Location: Lexington, KY - Hopkinsville, KY
Posts: 437
I believe it will. I am putting in a 2000 motor as we speak. But it is necessary for me to use the 2000 harness and ECU too because of the coil change (Luckily mine came with it all). You can do the harness and ECU from the yj, but it will require splicing from hell, and there will be many things (like your gauges and other things) that wont work right because the run off you computer. Best thing to do is get a 97 to 99 harness.

By the way, I think my 4.0 might be a little more torquey, but thats because its a stroker.
__________________
Gun Metal Blue Jeep Club Member #1
Low Output 4 Cylinder Jeep Club Member #1 (President)
1999 Four Banga Wrangla - NO MORE!!!! -Going in 4.6L Stroker - TF 727 - Dana 300 HD
Teraflex 3T w/ OME's on 32" BFG M/T's
AtoZ Yaffy Style rocker guards l Tuffy Series II Security Console l Zirgo "S-Blade" electric fan l PSC Trail corners w/ LED's l Hella 500's l Expensive Sound System
gmbtj is offline   Reply With Quote
Unread 07-25-2008, 04:41 PM   #34
dodgetk81
Registered User
1997 TJ Wrangler 
 
Join Date: Mar 2004
Location: PA
Posts: 539
Try Daveys Jeeps, Thats where I got all my swap stuff. I put a 99 into a 97. It was a plug and play deal.
__________________
97 TJ 4.0, auto, 4.5" RE long arm, 33 " MT/R's on Moabs, 4.10's, 8.8 w/Aussie locker, A to Z rockers, A/A SYE, Warn M8000, Vanco
dodgetk81 is offline   Reply With Quote
Unread 07-25-2008, 09:28 PM   #35
RnEmOvr
Have Cummins, Will tow.
 
RnEmOvr's Avatar
1999 TJ Wrangler 
 
Join Date: Mar 2005
Location: Ft Stewart, Ga
Posts: 10,564
will the 97-99 harness work on the 95 motor/trans/case? splicing wires wont be an issue i can do that in my sleep, but if the TJ harness will make it more plug and play then ill go that route, Ive been w/o my jeep since June 4th, I'm ready to drive it again
__________________
My Jeep 2.5-4.0 Motor Swap, Very detailed Military Jeepers

Looking to swap my 4" springs for your 2-3" springs. PM for details.
RnEmOvr is offline   Reply With Quote
Unread 07-29-2008, 12:49 PM   #36
RnEmOvr
Have Cummins, Will tow.
 
RnEmOvr's Avatar
1999 TJ Wrangler 
 
Join Date: Mar 2005
Location: Ft Stewart, Ga
Posts: 10,564
does anyone have # to daveys jeep
__________________
My Jeep 2.5-4.0 Motor Swap, Very detailed Military Jeepers

Looking to swap my 4" springs for your 2-3" springs. PM for details.
RnEmOvr is offline   Reply With Quote
Unread 07-29-2008, 02:33 PM   #37
jeepin79
Registered User
2008 KK Liberty 
 
Join Date: Sep 2007
Location: Bolingbrook, IL
Posts: 205
Quote:
Originally Posted by rnemovr View Post
does anyone have # to daveys jeep
330-337-5037

I bought a couple things from them, they have just about everything but I think they are expensive. You may want to shop around a little bit.

Last edited by jeepin79; 07-29-2008 at 02:47 PM..
jeepin79 is offline   Reply With Quote
Unread 07-29-2008, 03:41 PM   #38
dodgetk81
Registered User
1997 TJ Wrangler 
 
Join Date: Mar 2004
Location: PA
Posts: 539
Quote:
Originally Posted by jeepin79 View Post
330-337-5037

I bought a couple things from them, they have just about everything but I think they are expensive. You may want to shop around a little bit.

Some things seem expensive, some dont. I got my entire engine/tranny swap from them last year for 1200. That was wiring,computer, engine, auto trans, shifter and all cables, transfer case input shaft, and whatever else I needed. It was from a 99 with 60,000 mi. It doesn't hurt to call
__________________
97 TJ 4.0, auto, 4.5" RE long arm, 33 " MT/R's on Moabs, 4.10's, 8.8 w/Aussie locker, A to Z rockers, A/A SYE, Warn M8000, Vanco
dodgetk81 is offline   Reply With Quote
Unread 07-31-2008, 12:27 AM   #39
RnEmOvr
Have Cummins, Will tow.
 
RnEmOvr's Avatar
1999 TJ Wrangler 
 
Join Date: Mar 2005
Location: Ft Stewart, Ga
Posts: 10,564
Quote:
Originally Posted by jeepin79 View Post
330-337-5037

I bought a couple things from them, they have just about everything but I think they are expensive. You may want to shop around a little bit.
thanks, noone around me has them so he has to do,



also is it just TJ comp and harness or could i use others like an XJ or ZJ
__________________
My Jeep 2.5-4.0 Motor Swap, Very detailed Military Jeepers

Looking to swap my 4" springs for your 2-3" springs. PM for details.
RnEmOvr is offline   Reply With Quote
Unread 07-31-2008, 08:10 PM   #40
Doctor7474
Registered User
2013 JK Wrangler 
 
Join Date: Jul 2008
Location: Marietta, Georgia
Posts: 789
It would probably be easier to get a TJ harness and ECM. Should be plug and play that way.

I've never done a fuel injected engine swap using OEM harness's and ECM's.

Put an LSX engine into a 69 Camaro last year. Used Accel DFI and a painless wiring harness. Kinda like it better that way, since with the DFI if you change cams, add turbos/superchargers ect... you can program it yourself. But thats a totally different story then what you're doing.
Doctor7474 is offline   Reply With Quote
Unread 08-03-2008, 05:52 AM   #41
jeepsurf
Registered User
1998 TJ Wrangler 
 
Join Date: Jun 2007
Location: In the night
Posts: 372
Here's a link to a jeep graveyard here in nc. Give em a call and price ur harness an ecm.

http://www.easternautomotive.net/
__________________
jeepsurf endorses this post. Most of the time
Admin, nightcrew.org

1990 2.5 YJ / 1997 2.5 TJ

USAF VET

My YJ build thread HERE.
Nightcrew alive and well, now on VB 4.0 HERE.
Food mailed 3ooo milesHERE.
jeepsurf is offline   Reply With Quote
Unread 08-07-2008, 01:53 PM   #42
gmbtj
Registered User
 
Join Date: Jun 2004
Location: Lexington, KY - Hopkinsville, KY
Posts: 437
And most of the sensors on the yj's engine ran off 9 volts, tj's were mostly 5 volts if I remember correctly, so you might be having to replace some sending units and other sensors off the engine, transmission, etc.
__________________
Gun Metal Blue Jeep Club Member #1
Low Output 4 Cylinder Jeep Club Member #1 (President)
1999 Four Banga Wrangla - NO MORE!!!! -Going in 4.6L Stroker - TF 727 - Dana 300 HD
Teraflex 3T w/ OME's on 32" BFG M/T's
AtoZ Yaffy Style rocker guards l Tuffy Series II Security Console l Zirgo "S-Blade" electric fan l PSC Trail corners w/ LED's l Hella 500's l Expensive Sound System
gmbtj is offline   Reply With Quote
Unread 08-07-2008, 04:51 PM   #43
Tatersaladx
Registered User
1989 XJ Cherokee 
 
Join Date: May 2008
Location: Mass
Posts: 104
I just pulled the harness off of a motor i pulled from a 97 TJ, I had to cut the wire to the alternator so idk if its any good to you. I could also get the ECM, too PM me if your interested.
Tatersaladx is offline   Reply With Quote
Unread 08-15-2008, 06:12 PM   #44
RnEmOvr
Have Cummins, Will tow.
 
RnEmOvr's Avatar
1999 TJ Wrangler 
 
Join Date: Mar 2005
Location: Ft Stewart, Ga
Posts: 10,564
can i use the comp from a auto or do i need one from 5spd?
__________________
My Jeep 2.5-4.0 Motor Swap, Very detailed Military Jeepers

Looking to swap my 4" springs for your 2-3" springs. PM for details.
RnEmOvr is offline   Reply With Quote
Unread 09-05-2008, 10:17 PM   #45
RnEmOvr
Have Cummins, Will tow.
 
RnEmOvr's Avatar
1999 TJ Wrangler 
 
Join Date: Mar 2005
Location: Ft Stewart, Ga
Posts: 10,564
ECU and harness have been ordered, i finally got a job so things should start rolling good now
__________________
My Jeep 2.5-4.0 Motor Swap, Very detailed Military Jeepers

Looking to swap my 4" springs for your 2-3" springs. PM for details.
RnEmOvr is offline   Reply With Quote
Reply

Tags
2.5 , 4.0 , computer , engine , harness , swap , tj , YJ
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.