I own a 89' jeep cherokee and it threw a rod threw the block so ive been looking for a engine, i found one from a 90' cherokee the 4.0 from that should work with mine shouldnt it and by that i mean basically wiring harness are the same and all that fun stuff? The guy claims it has 98,000 on it and said he'd take 400$ for it. I know theres probably been plenty of threads on this same subject but i cant ever really seem to find a straight forward answer so sorry if its another one of those threads lol i was just wondering thatnks guys

 

Both the 89' and 90' come from the renix era jeeps 91' and up have the high output (HO) engines. Based off that I would say they are compatible, BUT I have never done an engine swap so I will not say it will work because I honestly don't know.

 

They are the same

 

In fact the engines itself will work all the way up to 99 if ya wanted...

Go ahead flamers... Lol

 

True story. The only folks who say it won't work are generally those who haven't done it.

 

Yep! I would just find the cheapest and newest... And one where the oil pans not covered in oil...