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So after years of sitting on a stand in my garage, I finally got the drivetrain for my 2001 XJ put back together and dropped into the vehicle... only to find the torque converter is dragging on the flex plate when I went to bolt them together. The build is based off an AMC 232 crank, which...

Aight, another question… The only parts I haven’t installed yet in the passenger side of the engine bay are the coolant reservoir and the battery. Anyone have any idea what this connector is for? Comes off the body harness by the PDC. All installed modules have been connected, so once again...

Hey guys, I'm working on piecing this damn 2001 XJ back together and am stumped on the green cable (probably 10ga?) with a flat square terminal, which looks an awful lot like the PDC connection (but without the 90 degree bend). The alternator cable is clear, as is the starter lead... but this...

Hey guys, Been inactive for a few years due to intermittent illnesses and other typical life crap, and am finally getting back around to putting my 2001 XJ back together. While tearing down the engine bay some years ago for touch-up and cleaning, I pulled everything that could be pulled...

Hey all, My XJ has been offline for over 2 years now, and I'm finally getting the SOB back together... but in doing so, I need to do some firewall rust/paint repair, and am terrified of removing these clips without knowing how to find replacements: Anyone have an idea of what the part...

Hey all, I've searched up and down but haven't found anything on this particular topic... Early AW4's had a drilled/tapped temp sensor port just forward of the hot fluid line that was commonly fitted with a sensor in Toyota applications. Although no sensor was fitted on XJs, owners simply...

One thing I failed to consider when opting to go with ARP head bolts is that I'd lose the extremely-handy driver-side studs for hoisting the engine for reinstallation. I'm also trying to get the entire engine fully assembled (manifolds, accessories, and all, minus the AC compressor) before...

So I finally installed the head on my stroker last night, and got my shiny new ARP head bolts lubricated with the supplied "Ultra-Torque" lube assuming that all the holes were blind holes... but then I discovered that the driver side bolts aren't blind, and do indeed protrude down into the...

So I'm making progress getting this damn engine back together, but just hit a major snag... The camshaft gear washer (J3173284) used by the older style cams and timing sets has been discontinued, and I can't for the life of me find one. I've found similar washers for Ford 5.0's, but they're...

As part of this stroker build (and really, a full rebuild of my XJ in the end), I'd really like to convert both the transmission and steering systems to -6AN or -8AN fittings and lines. Transmission fittings are well-documented (M14x1.5), the steering gear is simple enough (M16 and M18), and...

A few months back, I scored a Clifford 4.0 cast aluminum valve cover on the cheap ($40)... Seems to be a high-rise for more aggressive valvetrain. Based on the PCV/breather and oil filler locations, I'm guessing it was originally designed for the TJ. Anyone know much about these? I...

Due to the time it's taken me to get back to my 2001 XJ's stroker build, I wound up with a Comp Cams 68-115-4 I bought from Barnett Performance that I can only return for store credit. So, I'm trying to burn ~$192 on something else. Anyone have any experience with BBK's 62mm throttle body? I...

Hey all, It's been a while... Back in December of last year, I broke a piston skirt at 240,000 miles in my 2001 XJ, and was then knocked out of commission (labor-wise at least) due to repeated issues with diverticulitis that ultimately resulted in the loss of nearly a foot of my poop chute...

I'm 99% done with the teardown of my 2001 4.0, and picked up a Lisle 18000 cam bearing installation/removal tool to do the cam bearings. Starting with the rearmost bearing, I'm already running into issues. I have the appropriately sized expanding driver, and tightened it in the bearing...

So I finally got the engine pulled last night, and have been tearing it down this afternoon. So far, I've run into two weird things. It looks as though the jackass responsible for installing the AC bracket had checked out in Toledo, and installed one of the bracket bolts backwards... And...

My 2001 XJ made it 240,000 miles before breaking a piston skirt. I can say with 99.999% confidence this is the original 0331 head (non-TUPY), as I've owned it since ~110,000 miles. Never had a single issue with it. Given that it made it this far, is it reasonably safe to assume that I have...

Hey guys, Does the PCM on the 2001 XJ support any OBD2 mode 8 functions? I'm trying to pin down which cylinder is noisy (it's a bad rod bearing, wrist pin, or broken skirt... not sure which yet) and can't just pull a single plug wire since it has the coil rail. Would disconnecting the...

As luck would have it, right after I get my 2001 XJ back on the road, I've developed a significant rod bearing or wristpin knock... It'd been around in some form for about 10,000 miles, and would largely go away once warmed up, but after accelerating to pass someone on the highway the noise...

Short story: I'm installing the OEM Jeep sticker on a new front header panel (above the grill) and can't seem to find placement templates or specs in the FSM. Same goes with the currently-missing "4.0 LITRE" badge on the rear hatch. Anyone know what page/section these specs are in, or have...

Welp, last night I made a stupid decision and find myself in need of a new header panel and driver side fender (which I coincidentally had to replace a few years ago, but with garbage Certifit/Sortafit parts). The header panel ended up being a complete POS plastic/poly piece that quickly warped...