- Location
- Melting in Texas
I'm looking around for another XJ/MJ, yes just like a lot of us seem to be doing.
I like the mechanics of the vehicle and the straight forward design, I also like the RENIX system and want to get another rig that has it on board, but a question arose I cant find a direct answer to.
I read [http://www.naxja.org/forum/showthread.php?t=50209&highlight=year+differences] this[/url] about all the mechanical bits and pieces. The only thing not uncovered is how compatible the electronics are between the models. There's a lot of talk starting at 88 and up, and it seem people drop the 87 from that list even if it has the same body and engine.
In this thread post #15 brings up this topic that is not answered and I wonder if it's part of the electronics that make this difference.
I know some of you have fleets of these nice machines can someone just weight in here and confirm or deny electrical differences in the ECU control if any?
I like the mechanics of the vehicle and the straight forward design, I also like the RENIX system and want to get another rig that has it on board, but a question arose I cant find a direct answer to.
I read [http://www.naxja.org/forum/showthread.php?t=50209&highlight=year+differences] this[/url] about all the mechanical bits and pieces. The only thing not uncovered is how compatible the electronics are between the models. There's a lot of talk starting at 88 and up, and it seem people drop the 87 from that list even if it has the same body and engine.
In this thread post #15 brings up this topic that is not answered and I wonder if it's part of the electronics that make this difference.
The few books (and their not FSM's) I have about the Cherokee don't make it any plainer for me. The computer seems to be the same but some of the body wiring is different, like power doors (from my books 87 didn't have them) and minor things like that.the_bandit87 said:Just on the topic of RENIX engines, why are 87 4.0s listed as 173hp and all other newer RENIX 4.0s (88-90) listed as making 177. Did they change something to add 4 hp, or did they just re-test the engine? I've been trying to find out for years why mine is only rated at 173. Also torque for 87s is listed as 220 and 88 and up is 224.
I know some of you have fleets of these nice machines can someone just weight in here and confirm or deny electrical differences in the ECU control if any?