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Random engine question... will a 1996 4.0L Longblock work in a 2000? I'm not new to Jeeps so I know about the distributor needing to be removed and blocked off and my ignition parts swapped over. I'm just curious if the engine itself could be worth buying.
1987-2001 XJ blocks interchange.
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Block casting is virtually identical. However, you'll need to plug the temp sending unit hole near the back of the head, make some brackets to hold the coil rail up, and either buy an adapter for the exhaust manifold or live with possible performance loss and burnt gaskets.
Seasoned Member
Joined: Mar 2015
Posts: 280
Likes: 0
From: Portland, OR
Year: 1998
Model: Cherokee
Engine: 4.0L
From my understanding I have the original radiator in my '98. I pulled a bunch of sediment from my system that tested nearly .7v and was acidic I imagine. I have no leaks, think i should replace my radiator or try and run it two more years? Technecially the fluid should remain basic and have no electrolysis after the extensive flush I ran. I had no leaks prior. Not sure if I trust the Chinese radiators. Don't want to shell out ~$300 for a Mopar.
Last edited by indeepwithajeep; Sep 7, 2016 at 10:41 PM.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran
Joined: Mar 2012
Posts: 1,024
Likes: 2
From: Quebec
Year: 1996
Model: Cherokee
Engine: 4.0L
i have a small play at the gearbox sector shaft and was wondering if it's a bad sign or if it can be tolerated for a while. there is no leak and i get a really small clunking when i grab the pitman arm and try to move it around. i also feel it in the steering sometimes, it will be a light "pop" feeling in the steering wheel. i'm planning on adjusting the screw for the steering play i have, can it affect this too?
CF Veteran

Joined: Feb 2015
Posts: 1,528
Likes: 2
From: North Carolina
Year: 1993
Model: Cherokee
Engine: 4.0
Are these the correct said to be best ball joints for a our Cherokees? According to RockAuto, these are spicer
Edit: also, they have two different front ujoints with different cap diameters, which ones are the correct size for my 93.
Edit: also, they have two different front ujoints with different cap diameters, which ones are the correct size for my 93.
Last edited by 93XJeeper; Sep 8, 2016 at 11:14 PM.
I have a 2000 xj 4.0 straight six and it wont start in park. I have to start it in neutral but it wont start until the second attempt almost everytime. And when i pull into a stop and put it in park it immediately dies out do anyone have any ideas of what it could be.
CF Veteran
Joined: Mar 2012
Posts: 1,024
Likes: 2
From: Quebec
Year: 1996
Model: Cherokee
Engine: 4.0L
could be other things so don't focus only on this, but the neutral safety switch may need to be cleaned or replaced.





