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4.0 years..?

G

go4wheeling

NAXJA Forum User
Location
PGH, PA
I need a new motor for my cherokee and I can get one that is a 91 with low miles but mine is an 89. Is there much of a difference between the 89 and the 91 4.0 motor? Is is going to be a pain to swap?
 
The computer systems changed for the 91 model year. So 87-90 are compatible, and 91+ are compatible. If you were to cross these lines, it will be a pain, but i think it is doable....
 
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