Calgary Jeep Association

Author Topic: tj 4.0 swap info  (Read 1565 times)

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Offline 2grand4u

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tj 4.0 swap info
« on: January 09, 2010, 07:15:12 PM »
i would like to swap in a 4.0 but i would like to do it simply, i do have a welder and some fab skills but i was just wondering about the wiring part, i now the yj guys just add two more injectors to the stock 2.5 harness but is this possible on a tj??
2011 ford ranger going to get some love soon

Offline BlackYJ

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Re: tj 4.0 swap info
« Reply #1 on: January 10, 2010, 02:59:51 PM »
i would like to swap in a 4.0 but i would like to do it simply, i do have a welder and some fab skills but i was just wondering about the wiring part, i now the yj guys just add two more injectors to the stock 2.5 harness but is this possible on a tj??

I can't see why not because the 2.5L and 4.0L should have all the same sensors.
'95 YJ with a few mods

Offline tjnick

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Re: tj 4.0 swap info
« Reply #2 on: January 14, 2010, 11:09:57 AM »
completely different harness,  you can do the swap, but you need the donor's wiring harness and PCM.

Offline BlackYJ

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Re: tj 4.0 swap info
« Reply #3 on: January 14, 2010, 01:05:56 PM »
completely different harness,  you can do the swap, but you need the donor's wiring harness and PCM.

Yes you need the PCM but why is the harness completely different?  The 4.0L was based on the 2.5L
'95 YJ with a few mods