lexluthier72 Posted September 26, 2011 Share Posted September 26, 2011 Hey all, Ive been thinking about doing a gauge cluster swap. I did a search and did not find specific info on doing this swap on a 2.5L. I need to know which years will work, and does it matter whether its a 4cyl, or 6cyl? I'm looking for the easiest "plug and play" option, but want rid of the idiot lights. -Erin p.s.- Someone should do a DIY, and have a good list of what works, and what doesn't. Link to comment Share on other sites More sharing options...
jimoshel Posted September 26, 2011 Share Posted September 26, 2011 A couple days ago I swapped a instrument cluster from a '89 4.0 into my '87 2.5. Works great. All clusters from '84 thru '90 will swap. '87-'89 are direct swap. Later ones will also swap but there's more to them. Speedometer cable hook ups are different, Either swap the cable or the speedo. And the oil-temp sending units. Tach seems to be OK but I'm going to check it against another one some day. Link to comment Share on other sites More sharing options...
lexluthier72 Posted September 26, 2011 Author Share Posted September 26, 2011 I assume that one from a 90 XJ will be a direct swap into a 90 MJ? (the speedo cable should be the same?) Does a 90 have a Potentiometer adjustment for the tach? Link to comment Share on other sites More sharing options...
Eagle Posted September 27, 2011 Share Posted September 27, 2011 Yes, the '90 cluster has the adjustable tach. Link to comment Share on other sites More sharing options...
lexluthier72 Posted September 27, 2011 Author Share Posted September 27, 2011 Thanks Eagle! I assume if the replacement is also a 1990, that the speedo cable will be a match? Link to comment Share on other sites More sharing options...
Jeep Driver Posted September 27, 2011 Share Posted September 27, 2011 Yes, the '90 cluster has the adjustable tach. Â Â Can you elaborate? I have the 2.5 and someone swapped the cluster and I think the tack is off. What to look for? Link to comment Share on other sites More sharing options...
vaquaro Posted September 27, 2011 Share Posted September 27, 2011 Yes, the '90 cluster has the adjustable tach. Â Â Can you elaborate? I have the 2.5 and someone swapped the cluster and I think the tack is off. What to look for? :idea: Hook up a hand-held tach and compare readings ( Adjust potentameter as required ) to state the obvious :hmm: Link to comment Share on other sites More sharing options...
lexluthier72 Posted September 27, 2011 Author Share Posted September 27, 2011 I think he means to ask where is the potentiometer located on the (back?) of the cluster? Â Also...anybody confirm that a 90 XJ will have the same speedo cable hookup as a 90 MJ? -E. Link to comment Share on other sites More sharing options...
vaquaro Posted September 27, 2011 Share Posted September 27, 2011 I think he means to ask where is the potentiometer located on the (back?) of the cluster? Also...anybody confirm that a 90 XJ will have the same speedo cable hookup as a 90 MJ? -E. Yes the speedo hook-up is the same . Easiest access to adjust the tach is by removing the speedo from the cluster , you can then access the adjuster screw with the engine/tach running easily :wrench: Link to comment Share on other sites More sharing options...
lexluthier72 Posted September 27, 2011 Author Share Posted September 27, 2011 Thanks Vaquaro! Link to comment Share on other sites More sharing options...
jimoshel Posted September 27, 2011 Share Posted September 27, 2011 Can some one please post a pic of the backside of an instrument cluster with the tach adjuster indicated? Also what years had them and which didn't? I have removed IC from '84 to '89 and '93,'94,98 and '01 and I didn't see a tach adjuster on any of them. I also have the FSM for 1986, 1989 and 1993-94 XJ-MJ and there is no reference to tach adjustment. Link to comment Share on other sites More sharing options...
vaquaro Posted September 27, 2011 Share Posted September 27, 2011 here's a photo link - http://widetrackdrive.com/temp/mj/tach-pot.jpg Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 27, 2011 Share Posted September 27, 2011 And another. It's under the white plastic housing. Â Link to comment Share on other sites More sharing options...
lexluthier72 Posted September 27, 2011 Author Share Posted September 27, 2011 I'm a pretty smart guy, but I never would have figured that out without that photo. :D Link to comment Share on other sites More sharing options...
acfortier Posted September 27, 2011 Share Posted September 27, 2011 So if I have an '84 tach on my way to me to be swapped in an '88, I will have to change the cable? Link to comment Share on other sites More sharing options...
Eagle Posted September 28, 2011 Share Posted September 28, 2011 So if I have an '84 tach on my way to me to be swapped in an '88, I will have to change the cable? Yes, you will. And the 84 tach does not have the adjustable potentiometer, so it has to match the cylinder count in your vehicle. Link to comment Share on other sites More sharing options...
acfortier Posted September 28, 2011 Share Posted September 28, 2011 So, as long as its from the 2.8 V6 it will read correctly for the 4.0? Link to comment Share on other sites More sharing options...
lexluthier72 Posted October 2, 2011 Author Share Posted October 2, 2011 Scored this at the JY today $16 from a 1989/90 XJ. It came out of a 6cyl, but has the adjustable tach. Â Link to comment Share on other sites More sharing options...
vaquaro Posted October 3, 2011 Share Posted October 3, 2011 :thumbsup: Link to comment Share on other sites More sharing options...
Thunderbear Posted October 7, 2011 Share Posted October 7, 2011 How about us 86 2.5ers.. pre-90 cluster that matches cylinder count, or post 90 adjustable, correct? Link to comment Share on other sites More sharing options...
jimoshel Posted October 7, 2011 Share Posted October 7, 2011 Correct. Link to comment Share on other sites More sharing options...
BEATNGU Posted November 17, 2011 Share Posted November 17, 2011 So will an IC out of a 90 XJ be a direct fit for an 89 MJ.....????? :wrench: I'm handy...duh-huh-huh...!!! :dunce: Link to comment Share on other sites More sharing options...
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