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I've got another vehicle in my garage for maintenance, so my XJ has been sitting outside for several days in cooler, rainy weather. When I drove it this morning, the steering wheel initially wouldn't turn until I put a bit of effort into it, and once it broke loose, the steering wheel was...

I finally need to replace the heater core. I know many how-to's recommend or at least toss out the idea of replacing the A/C core at the same time, but is it really needed? I don't hear much about corrosion within A/C systems, and I worry that a replacement A/C core will be lower quality than...

During a flex check of my freshly installed front axle, I observed that the coil springs lightly rub against the unibody on the side that's compressed at full flex. Since this appears to be due the tilt of the axle causing the spring to bow inward, I'm guessing its a common event when fully...

As part of a front axle swap, I completely disassembled the RC 4.5" long arm front suspension on my XJ, and then put it back together with a few changes. A couple of comments on optimizing the setup: -- Switching from a fully linked radius arm to using just one short arm (on the driver side)...

There is some controversy about whether a D30HP fits in a 2000-2001 XJ without hitting the exhaust during full compression of the driver side. There are a few threads on the internet indicating that the pinion shaft snout will hit the exhaust pipes coming off the header. I can say for sure...

This kind of a cool article, no so much in my opinion but because of the description of the torture testing that was conducted to prove and improve the motor. https://www.thedrive.com/news/gm-uses-diesel-tricks-to-make-its-four-cylinder-truck-engines-tougher

So I'm switching over to a D30 HP, and while I'm in the process, I decided to test flex my RC 4.5" lift long arm suspension. Along with installing the D30 HP, I made the long arm length about 0.5" longer than the value prescribed by RC because I'm looking to get a little more clearance between...

I've been watching a bunch of videos on axle u-joint removal and installation. Old u-joints are out, and new are ready to be installed after I finish a bit of clean-up and painting. Most people put some sort of lube on the press-fit surfaces, but I came across a thread where a person adamantly...

Does anyone know of photos of a cut-open muffler to show how the baffle system is arranged?

I finally got together some LCA bushings for a comparison. There are two different bushing styles - early and late. The rubber portion of the early model bushing is wider (along the axis of the bushing) than the late model. I suspect that the reduced width of the late model bushing is to...

Time to replace LCA bushings. I can easily get my hands on Duralast, Moog, and Dorman. Any thoughts on which is better, or is there is another brand that I should be purchasing? As a side note, I originally ordered some Teraflex LCA bushings, and they came pre-cracked rubber, so I sent those...

I'm hearing an intermittent popping sound when turning the steering wheel a large amount. When I got under the vehicle to listen while my daughter turned the steering wheel, I found the noise to be coming from the steering box area. I have the Ironman steering box brace, a JCR steering box...

Is anyone aware of a 12 V circuit that either turns off or on when the 4L motor goes between idle and above-idle conditions?

Here are some airflow rate numbers for two different fan clutches. Testing conditions: Kestrel 1000 anemometer. Front grill removed. Hood closed. Anemometer placed against A/C condenser at the same location for each measurement. Location roughly corresponds to mid-height of the radiator and...

2000 XJ with about 110K miles. Just recently, when I first drive my XJ for the day, I'm hearing a rather loud popping sound from the front when at a high steering angle and the vehicle is moving slowly. Here are the details: It happens at steady high steering angle, so its not due to the...

Anyone have a factory front skid plate in good condition that they want to sell to me? Here is a photo of one (borrowed from Tim_MN): https://ibb.co/ZHFnXkL

After doing a bunch of reading, it seems like the options are using a factory style rubber bushing, standard polyurethane, RE Superflex, or IRO Johnny joint style. I'm hoping to stick with a bushing that minimizes NVH. A few questions: - Any recommendations on a ​good quality factory style...

The 2000 factory service manual indicates that the trim plate below the steering column pulls straight out after removing the three screws along the bottom. I've tugged pretty firmly, and it hasn't budged. I really don't want to destroy the trim cover plate trying to remove it. Can someone...

When my 31" tires wear out (probably before winter), I'll be moving to a 32" tall tire and new rims. It looks like I can get 32" tires in either a 10.5" width (265/75-16) or a 11.5" width (32x11.5x15). My assumption for traction is that wider is almost always better, so I was planning to go...

I'm curious as to whether hood vents on an XJ allow engine compartment fumes into the fresh air vents in front of the windshield. I have a Lancer Evolution which comes stock with a vented hood, and the hood is designed to create a vacuum above the vent that pulls hot air out of the engine...