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1992 4.0 - rebuilt motor, NEW head, new radiator, water pump, mopar 195 thermostat (pre tested), lower/upper hose, overflow bottle, 50/50 coolant, thermostat housing and it's been professionally 'burped'. Heater vacuum controller (plastic piece of leaking crap) has been replaced with straight...

1992 4.0 AX15 NP242 I'm trying to figure out what problems rotted lines to the charcoal canister could cause. I've been hunting down a crappy idle and abnormally low MPG (10 to 12 city) for awhile now. I've narrowed it down to the wiring harness up until the other day. I was converting to a...

Has anyone heard of a radiator cap blocking an overflow tube. I was messing with my cooling system today and noticed the upper radiator hose was pretty inflated. Usually, in the past, the upper hose was still able to be squeezed even when its at full temp. I started to unscrew the cap and fluid...

Anyone have any experience with the RADesigns setup coming from a AX15? Wanting to swap out my AX15 for an AW4 and don't have the room for a parts vehicle. Wondering with the RAD setup if there's any other parts I'll need aside from the transmission to keep everything working proper? Thanks

1992 Jeep 4.0 AX15 NP242 with around 2k miles on rebuild. Started having issues after the rebuild that've gotten progressively worse. Running at 230 with A/C on in 90 degree weather. Would probably go higher but I shut it down and flip on the heat. I just need somewhere else to look. Here's the...

Mostly just to keep track of my build. Suggestions are welcome though. Purchased this 1992 farm truck just outside some small town in Oklahoma. Pretty sure the guy I bought it from was the original own. He was asking 2500$ for it so showed up with cash to look at it. 145k miles, flat tire, dirty...

1992 Jeep 4.0 AX15 NP242 etc etc Trying to recharge my ac. Got the Red Tek 12a kit. Put the adapters on the low side port (I think) and tried to fill up the compressor. The line with the kit filled but nothing actually went into the compressor like the valve on the compressor side is blocked...

No ABS open carrier. Just looking to upgrade my u-joints without spending almost more than I did on the jeep itself. Was thinking of grabbing ZJ shafts but don't want the CV junk. Thanks

1992 4.0 AX-15 NP231 First off not 100% sure what year this case is out of. I posted up some pics so hopefully you guys can help me out. Thinking is a NP242 from a 1996/97. Question is with the short input shaft on the AX15 transfer cases would a medium input need to be swapped out or is...

1992 w/ 4.0 AX15 231 So having a rough idle and a few other things I'll list below. Worried the issue might be more than I can deal with in the garage. Hoping its just a fuel injector or spark plugs so going to be changing them out. Rough Idle Oil w/ Gas smell Sometimes hard start...

So I picked up a 242 from a WJ not thinking about the speedo. I have a working 231 from my 1992 and was wondering if there is a way to swap the internals to get the 242 to work inside the 231 case? I know the cases are pretty similar but not 100%.

Looking to lift between 2.5 and 3.5 inches. Was looking at BDS coils for TJ's and reading that they'll give one less inch than advertised. Anything over 3.5 inches is going to cause issues for me so was hoping someone had some experience with these coils. The others ones I'm looking at are metal...

1992 Jeep 4.0 AX15 So broke my glove box today because it wouldn't open. Now I have to replace the lock mechanism and retaining piece inside the glove box. My question is if there is a way to remove the lock cylinder from the glove box piece to put into a new one? I rather not have to trouble...

1992 4.0 AX-15 Stock steering box Installed some WJ lower control arms and noticed for the first time I can turn left WAAAAAAAY more than right. Not enough to were its hurting anything but figured I'd ask to see if there is an easy fix? I cannot remember if the gearbox is keyed or not been awhile.

So something got messed up. Put in some new injectors, bored TB and a cowl intake today. Went to start up the comanche and it would barely start. Rough idle then dies shortly after and backfires coming down from 3.5k RPMs or so when I rev the engine to keep it from dying. Throwing codes 24 and...

So I pulled my exhaust manifold today thinking it was cracked and looked perfect. Still replacing the crap tho since I don't want to pull it off again. Anyway I noticed my coolant temp sensor and knock sensor had nothing going to them. No wires even close. Anyone have a clue where to start?

Anyone know where I can find new vacuum lines for the fuel pressure regulator and heater control valve. Mine are pretty much done for.

Ok trying to get my oil filter adapter out. The A/C lines are driving me ape *%($. Is there a way to disconnect the lines and still be able to use them after I hook everything up? Or is this one of those disconnect and have to get recharged / new compressor things? Thanks. Getting in the way of...

THOR Cowl Intake 150$+ shipping New in box. It was never even pulled out of the shipping box it was sent in. http://shop.trailheadoffroad.ihostnetworks.com/productinfo.aspx?productid=XJCI91-01

Don't think this is advanced fab so I figured I'd put it here. I seem to always pick up vehicles with the worst seats and even worse selection. The early year XJ's are damn near impossible to find replacement seats with the exception of junk yards. So while I was at the pull a part grabbing a...