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I haven't been able to find any threads that address my specific question so I am hoping someone with experience might chime in. What changed between the 1990 and 1993 model years that might make it impossible/impractical to install a 5 speed manual transmission from a 1993 Cherokee into a 1990...

My '90 XJ Laredo just crossed the 200K mark and I felt that this event deserved some recognition. - Original 4.0L engine and trans. Still has great compression, doesn't burn or leak oil and runs perfectly Over the years, I have been slowly restoring/upgrading it including: - New...

A Look At What Made Jeep's 4.0L Engine So Great (msn.com)

Update: 12/18/23 - This item is no longer available. I was in a rush and screwed up. I have a 4 door but accidentally ordered a set of new beltline moldings for a 2 door. The pair was only ~$20 and it would probably cost more to ship it back than it is worth so I am offering this set for...

I searched for pictures on the forum but can't seem to find what I need. The "fresh-air" blend door on my '90XJ seems to have broken. Temps have been close to the 100 mark in Houston so I really want good AC. I pulled the fan out to inspect the blend door and found that one of the plastic...

I would like to hear people's opinions on upgraded battery options for a 1990 XJ. Working from home coupled with new habits formed over the past 2 years of lock downs has resulted in much lighter use of all my vehicles. The bi-product of this is that I typically only take the Jeep out once a...

My power windows sucked. The Passenger side was the worst and not only would it not have enough "oomph" to fully close the window but I would have to fiddle with the button a dozen times to "help" it work through some dead spots. Most posts recommend changing the window motor but I tried...

I just finished repairing the Cruise Control on my '90 XJ. It took a while because a lot was wrong with it but it is actually pretty easy to diagnose and repair. If you want to take this on yourself, here are some tips on how to check it and what you should do to make sure it doesn't happen...

'90 XJ 4.0 Automatic. The strangest thing just happened to me and I am wondering if anyone else has seen this or can offer some insights on what might be happening. The XJ is working great but while stopped waiting for food pickup, I decided to turn on the headlights and suddenly my temp gauge...

'90 XJ with 200,000 miles. Left some bad gas in it last year and while it was running fine, gas mileage dropped off a cliff so I pulled the plugs to find fouling on 3 cylinders. I did a leak down test on all the cylinders (cold) and had 25% leak down on 3 but 50% leak down on the other 3 with...

When you removed your original mounts, they were a snug fit. You go to install new aftermarket mounts and there is about 1/8" gap between the mounts and the motor side of the brackets. What would you do? - tighten the bolt to squeeze the brackets into the mount? - the motor side looks to be...

A couple of years ago I tried to explain the cause of a rear hatch leak in the window area but based on the questions I got, I don't think it was clear. Since I finally got around to fixing mine permanently I wanted to post (I hope) a better description of what is happening here. The first...

There might be some nuggets in here that can help someone else so I wanted to post some pictures of my restoration efforts on the interior of my XJ. Back in 2014 I stripped my XJ down to bare metal and repainted it. While it was apart I did some minor interior improvements like re-dying the...

I found this hose end disconnected. Hoping someone can tell me where it is supposed to go. It hangs near the heater fan.

Background: The engine has 198,000 miles. I replaced the rear main seal on this engine about 12,000 miles ago. I don't put a lot of miles on this vehicle so this equates to about 6 years. It has been tight and dry ever since with absolutely no issues. In prep for a 140mile drive I took it...

TrueTrac install My XJ is destined for a cold climate and I want to upgrade the D35 open carrier to an Eaton TrueTrac to make it easier to handle on ice (very little off-roading so I have no interest in upgrading to a D44 or other). I am planning to reuse the existing crown and pinion which...

Completely bummed out. I went to the local LKQ (Pick a part) on the weekend and for the first time there were no XJ's on the lot.

I posted a while ago about a high idle issue I was seeing on my '90 XJ. As background, if I simply turned the key on and cranked, I was pretty much guaranteed to see idle sitting at 2K+. If I turned the key to on for 15-20 seconds before cranking, idle would settle nicely at 800. The issue is...

Anyone seen this mod before? https://houston.craigslist.org/cto/d/91-jeep-cherokee/6762161727.html Replacing the front doors with the 2 door version and shrinking the rear doors.

My '90 XJ is running like a fine Swiss watch but I have noticed one thing that puzzles me a little. I would love the thoughts from some of the experts out there. I should clarify that I implemented all of Cruiser54's recommendations and I doubt that there is a '90 XJ in existence with better...