2.5-4.0 swap is underway!! - Page 3 - JeepForum.com

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post #31 of 172 Old 07-25-2008, 04:27 PM
gmbtj
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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.


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post #32 of 172 Old 07-25-2008, 05:07 PM Thread Starter
RnEmOvr
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well crap, i guess im going shopping, so my engine will work i just need the newer harness and ECU?


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post #33 of 172 Old 07-25-2008, 05:34 PM
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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.

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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
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post #34 of 172 Old 07-25-2008, 05:41 PM
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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
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post #35 of 172 Old 07-25-2008, 10:28 PM Thread Starter
RnEmOvr
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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


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post #36 of 172 Old 07-29-2008, 01:49 PM Thread Starter
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does anyone have # to daveys jeep


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post #37 of 172 Old 07-29-2008, 03:33 PM
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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 03:47 PM.
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post #38 of 172 Old 07-29-2008, 04:41 PM
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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
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post #39 of 172 Old 07-31-2008, 01:27 AM Thread Starter
RnEmOvr
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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


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post #40 of 172 Old 07-31-2008, 09:10 PM
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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.
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post #41 of 172 Old 08-03-2008, 06:52 AM
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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/

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post #42 of 172 Old 08-07-2008, 02:53 PM
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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.

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post #43 of 172 Old 08-07-2008, 05:51 PM
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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.
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post #44 of 172 Old 08-15-2008, 07:12 PM Thread Starter
RnEmOvr
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can i use the comp from a auto or do i need one from 5spd?


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post #45 of 172 Old 09-05-2008, 11:17 PM Thread Starter
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ECU and harness have been ordered, i finally got a job so things should start rolling good now


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