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Unread 07-15-2010, 10:00 AM   #1
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1987 MJ Comanche 
Join Date: Feb 2010
Location: Norway
Posts: 2
TJ engine swap

I have a friend with a 97 TJ 2.5 and a manual.

And i have a 93 zj 4.0 engine with AW4 trans without the wiring harness in my garage that we really wont to put in his Tj.

But I need some help!! What is the best way to get it to work in the TJ?

I have thought about buying a wiring harness from a TJ with 4.0 and auto trans, but wil i work? Isn't the sensors different from 93 to 97 4.0?

And we live in Norway, so there are not a lot of TJ's with 4.0 around. The junkyards do not have that many Jeeps like you in the states. Specialy TJ's and 4.0 engines.

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Unread 07-15-2010, 10:34 AM   #2
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2003 TJ Wrangler 
Join Date: May 2009
Location: The Republic of Dave
Posts: 6,208
You're going to need a lot of auxiliary parts. Wiring harness and PCM, exhaust, fan and shroud, motor mounts, bellhousing (if you swap the tranny), etc, etc, etc...

There are a lot of threads on the 2.5 to 4.0 swaps. Take a brief look through them.
If it's worth doing, then it's worth overdoing.

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engine swap , zj , grand cherokee , tj , wrangler , 4.0 , 2.5 , aw4 , transmission , wiriing harness , sensor , help , advice
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