WAEMID IV

Very nice. I'm working on converting my 2wd truck to the 93+ hub bearings today actually

Based on all your confirmed known functional components, the issue has to be with the white line or something it plugs into. We know the light on the dash works when the switch has vacuum, and we know the CAD axle is actually engaging (right?) Once the CAD fork is in the *engaged* position, the *white* line receives vacuum. Thus, if the CAD *is* working and your part time light *doesn't* turn on, it means the *white* line is not receiving vacuum or it is compromised at some point, perhaps a check valve may have failed internally. I would triple check to make sure the shift fork inside the CAD thingy does actually engage, just to be certain, because that's usually where this kind of issue stems from.

This may be a controversial take, but I don't think there ever was a 4.56 ratio from the factory in an XJ/ MJ. I've been looking through all sorts of pages on here, forums, facebook posts etc ever since I made this post 4 hours ago, and not once has *anyone* actually been able to confirm they had 4.56 gears ((unless they re-geared themselves)). The Novak page, wikipedia, and vast amounts of uninformed commenters claim 4.56 exists, and only with the 2.5L + Automatic, but not a single one of these sources can back up that claim with actual evidence. No build sheets, Factory service manuals, differential ID tags, or axles listed on car-part.com across the country have ANY 4.56 ratios. For comparison, I can find 3.31 without any issue, and I know those are rare. 4.56 with a 2.5L just isn't possible, especially with the tiny 195/65R15 tires they usually came with, the RPM would be ~3,500+ at highway speeds, even with the AW4's overdrive. I think 4.10 sounds reasonable, and even then you're at what, 3,000 RPM at 70mph. I'm sure someone who can speak math will correct me I got to drive a 2000 2.5L Auto XJ (3 speed) recently, and confirmed it had 3.55 gears in the axle. That thing had a 0-60 time of 26.5 seconds, *literally* slower than a semi truck. I would guess a 2.5L Auto (4 speed) should have either 3.73 (haven't found any evidence for that) or 4.10, but most certainly not 3.47, which isn't even mathematically possible unless you have 52 teeth on the ring gear and 15 on the pinion. I'm not sure if such a thing would fit in a Dana 35, but I'm not an expert in axles. Like you said, this is AMC, they're not exactly known for doing things that make sense. I have discovered a rabbit hole so deep I am actually losing sleep over this at 2 AM on a wednesday

I was not able to yet. This yard doesn't allow you to jack up vehicles for liability reasons, so I have to make an appointment to have a guy come out with a forklift and get it off the ground so I can get the axle un-buried from the sand. I will report back once I have confirmed the ratio. (I also contacted Dex Jeeps to see if he had any renix 2.5L + autos, and he doesn't have a single one. That shows how rare they are.)

I have been looking through the registry spreadsheet for the past few hours now lol. These are all very interesting trucks I notice there are 5 times as many 87s as there are 88-90, which would explain why some people (like myself) thought it was only a thing for 87 One thing nobody can agree on is the gear ratio. The Jeep.com build sheet generator says 3.47, The MJ build sheet generator says 3.55, owners themselves say 4.10 and commenters who think they know everything say 4.56. I must find one with a rear axle and count the teeth myself.

Do you still have this truck? Have you ever been able to verify the gear ratio? There's no way it has 4.56 gears

Not only did this yard have 1 renix 2.5L +AW4 MJ.... they had 2. Check my post in the 1989 category

1989 Jeep Comanche 2.5L / AW4 / 2wd / Dana 35 / Short Bed Current Location: Nekoosa Auto Iron and Metal (Wisconsin Rapids) Status: sawed in half at a junkyard This yard has 4 MJs. I shall add them to this registry for documentation purposes. This is MJ 4, which according to all known laws of MJ should not exist. The VIN confirms: >It is a 1989 >It is a 2.5L >It is equipped with the AW4 4 speed automatic If you put that VIN into the build sheet generator on Jeep.com, it confirms it had an 18 gallon fuel tank, which was only available on the short beds. Because it was a short bed, we know it had a Dana 35 rear axle. It's a column shift with door pockets, an intact door sticker, and a very custom looking coil spring job in the front. The bed and rear frame have been cut off and are long gone. What I find strange is the build sheet declares this Jeep had a 3.47:1 gear ratio. As far as I know, not only does that ratio not exist for the Dana 35, but it's mathematically impossible. The closest I can get via estimating the teeth count on the ring and pinion gear is 45/13, which gives a 3.4615384615 (which would round down to 3.46, not up to 3.47). I would of course just open the differential and count the teeth to see for myself, but as noted, the entire back half of the truck is not there and it is 2wd so the front axle can't help us. Another thing is, I've only heard of 2.5L + Automatic during the renix years to be a 1987-only thing. I have heard of a handful of *specifically 1987* XJs and MJs with a 2.5L mated to an AW4, but never, not once, a 1989 with this drivetrain configuration. It is considered "known" that the 2.5L didn't even have an automatic option for 1988-1993, with the Chrysler 30RH returning in 1994. This truck existing implies the AW4 stuck around until at least 1989 behind the 4 cylinder - a late 89 at that, manufactured on June 3, '89 brings this MJ close to the last known model year 1989 Comanche (that I'm aware of) which is June 29, 1989.

1987 Jeep Comanche SporTruck 2.5L / AW4 / 2wd / Dana 35 / Short Bed Current Location: Nekoosa Auto Iron and Metal (Wisconsin Rapids) Status: Blue This yard has 4 MJs. I shall add them to this registry for documentation purposes. This is MJ 3, which is the first time I've seen a 2.5L with an AW4 attached to it. It has the iconic blue interior, is a column shift and has vent windows. It is a short bed with some sort of aftermarket-looking topper on it

1990 Jeep Comanche 4.0L / AW4 / 4x4 / Dana 35 / Long Bed Current Location: Nekoosa Auto Iron and Metal (Wisconsin Rapids) Status: Parted out in junkyard This yard has 4 MJs. I shall add them to this registry for documentation purposes. This is MJ 2, which is their only 4.0L-equipped one. It has cruise control, command-trac, the opening rear window, and was a column shift. It also oddly has headrests, which I've never seen on the bench seat before.

1988 Jeep Comanche Base 2.5L / AX-4 / 2WD / Dana 35 / Short Bed Current Location: Nekoosa Auto Iron and Metal (Wisconsin Rapids) Status: Rusted in half in a junkyard This yard has 4 MJs. I shall add them to this registry for documentation purposes. This is MJ 1, which is rather unappealing, just a base model 4 cylinder 4 speed 2wd with no options.

It's very likely still there, this yard doesn't scrap things until they're a bare frame, and then they'll sell that. But it is really well stripped

There is a new link for anyone wondering what happened to these things: https://ogrshop.com/products/ogrevo2

This is Cherry Pie. My 1989 Jeep Comanche Eliminator. That's right, mine. 4.0L/ Automatic/ 2wd/ Dana 35/ Short Bed Current Location: Wisconsin Status: RACE TRUCK I bought this truck 2 years ago for my friend. He never paid me back for it. There's no rust aside from a light outer layer on the floor of the cab; it was a Florida truck its whole life until my friend let it sit in his yard doing nothing for 1.5 years. It was such a shame to see it sit there and rot, while he also wasn't paying me for the truck I bought him, so I repossessed it and keep it safely out of the Wisconsin snow. It's well optioned, it had AC, fog lights, the cargo light, power/comfort switch, tachometer cluster, bucket seats and door pockets. Really the only thing I wish it had is Cruise Control. As of January '25, the first priority is an open loop cooling conversion, there's a fuel leak near the tank, and it needs window seals and basically every moving part in the passenger door is broken. Long term goals include a lowering kit (probably about 2" so I don't have to cut anything or have clearance issues), manual swap, and maybe if I find a 3.07 Dana 44, one of those too. I want to put smaller tires on it and the 3.07 ratio would be more ideal than the 3.55s it has. I may keep this thread updated, but will probly just restart the youtube series if I can ever get the motivation to do videos again.

Yeah they're all mostly there, this yard may be willing to sell them as shells. They're very stripped but the frames are in great shape, most of them were Oklahoma truck their whole life