Suuperman

I will try to remember to pull the part number off when I pull the cluster back out to fix the speedo. But on a side note...I have not seen a gauge style cluster in a 4 bngr XJ/MJ...so do they even exist? Even my late model 4 bngrs all had dummy lights. (the XJs) I searched in a lot of places to figure out what I needed to do as all the swaps I have done in the past were late model ('97+) which are plug and play. I never said this was and mainly wanted to post part numbers of the senders since no one seemed to know them...or at least I could not find them. All the writeups I found pertained to 6 cyl to 6cyl swaps. No real hard information on the 4 bngr. Eagle repeatedly pointed out my tach was wrong despite the fact I verfied it with a scanner. I am admitting this may have been a one time thing and others may not have the same luck so to speak... so Eagle's persistence...? I'm glad he is passionate but I feel discredited myself...partially due to not being a moderator or 'part of the group'. Move it, delete it...do what you feel is right. That is all I was trying to do. Sorry for ruffling feathers by trying to help out. Lesson learned. :???: :D

Wow...well I guess I'm just an idiot! :D Seeing as I pulled the cluster myself...from a 1990 4.0L XJ...that I also pulled other parts from for my own 1990 4.0L XJ. Maybe those other 2 cylinders were just fake? :hmm: Sorry for being sarcastic but for the love of pete...come on. Not sure why you can't believe me...the tach works. It came from a 1990 XJ 4.0L. Not sure what else you need in order to believe me but I am not going to actually argue over parts I pulled and worked on myself. :cheers: I am by no means a liar...and have no reason to try and mislead you or anyone else here.

I posted a couple more times but they disappeared...? You say your friend's rig was an '84...with the 1 bbl carb right? That's a fairly different animal from the TBI 4bngr in my '88. (I know you know that I'm just stating the obvious) Wiring is different and that's just a start. I owned an '85 (XJ of course) myself...was my first ever jeep about 16 years ago. That being said I can see why you had to adjust the tach on that one. I was not trying to say mine would NOT need it...but that it didn't appear to. And as of yesterday afternoon it was checked with a scanner and the tach is reading correctly. Maybe they won't all do that but this one is. Someone put the 3.55 rear end in mine somewhere down the line...with the 5 spd I would for sure have expected the original rear axle to be a 4.10. But I thought the 'fuel miser' AX-4 4 bngrs had 3.31's...not 3.55's? THe only gauge that isn't functioning (at least for an unkown reason) is the voltage gauge. It won't come past about 9-10V. But the scanner showed the battery as good. So I will have to check out that one. The gauge moves...but is reading low for some reason.

Well over the last 2 days I replaced/had rebuilt a good part of the top end of the motor. 2.5L had a blown head gasket off the outside of #1. Also had 2 bad intake valves and a bad exhaust valve. SO had a valve job done and replaced the 3 bad ones. Put it all back together along with new ex manifold (did that months ago actually), water pump, hoses (deleted the heater bypass valve), new head and valvecover gaskets, and replaced the battery cables and terminals. Runs like a top...funny thing is it ran pretty darn well even with the low compression and bad head gasket. Now to find seats! I got lucky with my last MJ and found a set of buckets out of a '92 MJ in the boneyard. I doubt I will get that lucky and to add fuel to the fire my DS floor mount is broken...so I need to replace that as well. Once I have seats and work on the floorboard some it's on to suspension, axles and the 4wd conversion.

That may be true on it not being self-compensating. BUT...the engine sounds to be idling exactly how/where it should. When I rev it up the tach moves appropriately. When driving and shifting (it's an AX-5 the tach moves appropriately. Even the 'up shift' light comes on at the 'right' time in the cluster...and the cluster came from a 4.0L/AW4 XJ. ***this thing has an external slave AX-5...how common is that in an '88...maybe my truck is special! :D It has a 3.55 rear end with 225-75/15 tires. I have not had it past 30 MPH +- (remember no speedo and I don't have a GPS to verify) or 3rd gear. It's not tagged/insured yet. All I can say is that it is acting as it should be and appears to work correctly. I've owned several 4 bngrs (2-XJs, 2-MJs, 2-TJs)over the year range of '85-97 so I know the motors fairly well and how they should sound at idle and while driving. What happened when you did your swap on a 4 bngr like this? Did you have to adjust your tach? What year cluster did you use and what year did it go into? Maybe this exact swap doesn't need to be adjusted? My friend has a scanner and if he has the 4bngr card (I am guessing it's different than the 4.0L) it will for sure be checked. But again...I see/hear NOTHING telling me it's wrong.

Actually I did not touch the tach...and by all appearances it is working perfectly. Idles around 600 RPM +-. If it starts to give me trouble I will pull the lcuster out and see what I need to do...but I think it's good to go.

You should be able to do what I described above. I am not sure if you will need to get the cluster from a certain year range or not (IE '84-86)...but as I said I used a 1990 XJ cluster in an '88 MJ. You will for sure have to use a 1990 or older cluster.

I've owned several late model 2.5 and 4.0L XJs and the gauge swaps on the '97+ XJ's are easy...plug and play. But on my '88 MJ...and being a 4 bngr it seemed uncharted territory. I asked questions here and on NAXJA and got a few different answers (which I appreciated) but still was not sure IF it would work going form a 4 cyl to the 6 cyl gauge cluster. That's one of the things I liked about the 2 TJ's I owned...they had gauges instread of lights regardless of which engine you had. I obtained a factory cluster with gauges out of a 1990 XJ sport (4.0L) from the junkyard for about $10. It has the mechanical speedo. I bought the coolant temp sender from advance auto parts PN: WT761 $17.79 And the oil pressure switch/sender (also from advance) PN: S4185 $33.59 This was looked up for an XJ as I could not find an MJ PN for it. Both were direct replacements. The oil pressure sender for the 'gauge' is about 3 times the length of the 'light only' sender but that is the only 'visual' difference. It has a single blade connector and the coolant sender is just a post type. I think at some point the oil sender changed to a multi-blade or pronged connector BUT I know up to 1991 this is the correct one...and since the MJw as only built until '92... All the gauges work just fine (except I think I broke my speedo cable). So for about $60 I have rid my MJ of the dummy lights!!

Thanks...I think I may have answered it myself as well... Realizing the parts store has more 'stuff' listed for XJ's I did a search for the oil sender for an '88 XJ (well...for my '90 XJ first) and sure enough...they have a GAUGE sender listed. SO I guess I will see if it works. It is the same PN as the '91-? Anyone else able to confirm?

I have an '88 MJ 4 bngr. I want to swap out the dummy light cluster for a gauge cluster. I have a cluster from a '90 and I know HOW to swap it. BUT the senders are giving me a fit. I found a GAUGE specific coolant temp sender for the '88. With the oil pressure sender I cannot find a GAUGE sender until 1991. I am sure it will fit...but I don't know if it will work and I don't want to waste $34 to find out. Does anyone here know if the '91+ sender will work? It has a single blade type connection so again I know it will FIT...

Can anyone clarify on whether or not moving the coolant temp sensor is needed?

If the donor rig is a manual...you will need the flywheel, clutch, and then the tranny/t-case and driveshafts from the donor. If it is an auto...you will need the flexplate, tranny, t-case, and driveshafts. Of course the shifter/linkage will be needed in either case. If the donor is an auto...you will need an ECU from an auto the same year (or year range) as yours as well as the TCU for the tranny. It will be harder to swap BUT I have friend who did so successfully about 3 years ago. I helped some so I know first hand it works.

The coolant temp sensor is in the head...and the manifold 'cooling circuit' is separate from the head. So wouldn't that mean it would still work fine?

Having a valve job done on my '88 4 bngr and while it's apart I am going to replace the water pump and all the hoses. Is it necessary to run the water/coolant through the manifold? Or can this be deleted? I know on a carb'd engine it may help in cold weather but being injected...and in Florida...? Just trying to simplify some things.

I have a few. M-725 ambulance converted to a camper/tow rig. 12 valve cummins with D-60 front and 14 bolt or D-70/80 rear. Needs to tow at least 2 jeeps behind it. FC-170 crew cab with either the stock diesel motor in it OR a 4BT. FC-van...motor doesn't matter. Willys wagon with waggy 44's F/R and a 4.0L HO AW-4/231. Daily driver with old school looks but reliable modern (yeah the '90's is modern right? ) drivetrain.