Cherokee Tech

[jeeprunner81]

This is a plan and simple question for the one with the knowledge. what is the difference between the engin wiring harness from 89 comanche versus one from the HO cherokee found a good donor engine and harness from the comanche at a good price but i really want the HO OBD2 model efi

 

[Badger]

they are completely different.the 89 is a renix motor and it uses a completely different engine management system.91 and up motors us an OBDI management system while the later 96 and up used the OBDII system.if you really wanted to i guess you could hack up each harness to make it work but why.just go to any pick and pull and find the correct year needed for the job.

 

[Milner]

You can install the newer motor in a renix xj, just reuse the renix electronics and you original intake and exhaust manifolds....I put a 96 in 90 without a problem....

 

[jeeprunner81]

I was think the same as both of you I know the block are identical. I want to put a stroker into my J-10 wich is why I am looking at the non HO 4.0. It is at a killer price of $125 with harness and ECM. The guy says it ran good whne he removed it. But I am not that good with wiring and EFI systems ( my knowledge is limited have no one to teach me the ropes) in other owrds I am scared I would screw up the EFI swap and have to pay some one to fix my screw up.
So I was going to take this 4.0 l Budget permitting stroke it and use my manifild and carb. from my 4.2l change the gears on my Dizzy from the 4.2l and make a carbed stroker. until I had the knowledge to go total EFI