DirtyComanche

Doing more research on the ZJ fan clutch, I don't think I will go that way. The ZJ fan is much larger and heavier. It sounds like with the much smaller XJ fan on it the clutch tends not to disengage at all. Some users have reported increased noise and decreased fuel economy because of this. From a standpoint of economy I think switching to dual electric fans on temperature switches would likely be the best option. From a reliability standpoint I do like keeping the mechanical fan. I am somewhat torn and will do more digging. I guess I could put a HO style thermostat housing on it and that would net me two locations for temperature switches, which could allow for a fairly reasonable control system.

Mine is about as bad as those. There's a reason I have lockers in both axles of both of my DDs. As long as I use the plow to keep it clear and the chains on it to cut the ice it isn't bad. The lockers are for when I don't have time to do that right away.

I need the little boot that seals the shifter into the top case of a NV4500. I believe they're the same Dodge or GM, but my application is GM. Some random company makes them but they don't seem to ship to me and I can't get them from the usual sources. It's the type of thing that would fit in an envelope, so I'll ask for it... Everything else I want isn't shipped cross border easily.

I buy Dana/Spicer. SPL series. Okay, I "would" always buy them if I had time to order them. I've used all sorts of other joints from other brands, since nobody locally stocks Spicer SPL, all are junk in comparison to the actual Dana SPLs. The only problem is I'm stuck ordering them from Rockauto in advance if I want them.

Moog also makes the CC784, which is advertised as being a HD variable rate spring for a 4wd XJ/MJ. It will come out to being just a hair taller than the ZJ spring as it's basically the same length but has a few more pounds of rate to it. I've personally used neither, so no comment on which way I'd go. Rockauto has either for about $60 USD.

Where do you get fluid to? Did the line actually blow out, or did it seemed blocked? The line for the right front is prone to being damaged during engine removal/install.

Assuming it couldn't be a bolt on is a bit naive, the fan pulley uses a fairly generic pattern for the hub, and many different fans will fit it. The kicker is you need a reverse rotation fan that's small enough to actually fit in the minimal amount of space available. Full electric is great if your electrical system is working correctly. Experience has shown that temperature switch failures or anomalies seem to be common, which you certainly can address by using an override switch but at the expense of complicating the system. Having to run one fan constantly also adds a significant base load to your electrical system, which may not be an issue assuming you have enough alternator, and that that alternator is working; more than once I have made it home or off the trail with a dead alternator by shutting off everything I could and running the battery down, with an electric fan you would probably get about half the amount of run time versus not. What plastic fan do you have? If the blade profile is more modern then it probably does move more air, or at least isn't producing as much drag to do it. The factory mechanical fan is NOT an efficient profile.

4.0L related. Everyone who upgrades their mechanical fan does it in one of two ways, either they throw a ZJ clutch on the stock fan, or they go to an electric fan(s). Or at least that's my assumption. Does anyone know if there is a better mechanical fan out there that fits? I don't believe the blade profile ever really changed over the production run of the XJ, and it's not exactly a space aged design.

I wouldn't even worry and would just use a credit card or PayPal. I've been burned multiple times with stuff but never actually been out of money at the end. There's a POS iPhone sitting on my desk right now that I was burned on. Cost me a few minutes of my time, nothing else. I even told the seller that if they sent me a shipping label they could have it back, but they declined.

I don't know if I'd call Mishimoto a reputable company.

I replaced it with a ball valve in my XJ.

He really doesn't need it because he's not using his injectors for fuel delivery.

I had no idea the Liberian space program was so successful.

I wish I'd had a dad that could have at least given me that much advice. Ah well, I do okay for being a totally self taught numpty.

53007563AB Or get one from a HO (any, XJ/WJ/TJ/etc) in the junkyard for free. Just need a deep 15/16".

Most Renix era Jeeps don't have them working at this point. Since you can't really tell the difference, nobody fixes it when it fails. On my XJ the wires were all broken off. So I fixed it. I have no idea if anything changed after that.

I would like to buy more of those FSMs, but they're just expensive. I could really use an 87 or 88 one, and a 91 or 92. The Ford dealer near here tossed all their paper manuals a while back. Truckloads. They had it up on the buy and sell to come take whatever you wanted for free. The Dodge/Jeep dealer has long since got rid of theirs though...

There's just multiple P/Ns as they supersede them. There is a physical difference, but not a functional difference.

What Jeep Driver said is the easiest explanation. Generic: https://www.rockauto.com/en/moreinfo.php?pk=684506&cc=1180370&jsn=2933 Mopar: https://www.rockauto.com/en/moreinfo.php?pk=10283388&cc=1180370&jsn=2934

There was somebody on here or eBay that was selling modified XJ units. I'd personally just mod an XJ one.

A fan shroud makes between a 30% and 50% difference in the efficiency of a fan... They're $15 on Rockauto for the newer style one, which is backwards compatible with the old style.

Check the other end of that harness, there's a change in the connectors sometime around there, they went away from the GM Weatherpacks to Chrysler connectors. It's obvious if it's a problem.

I'm assuming a Renix. It's super easy to just go to the junkyard and get the majority of the parts. Well, maybe, the 4.0 HO stuff is now much more common and it uses a different mounting bracket for the compressor. I'd just get the HO bracket. You can buy a new evaporator, condenser, and drier/accumulator for cheap off Rockauto or whatever, or roll the dice on used stuff working (the drier should not be reused either way). Failing a junkyard, find somebody parting out an XJ, guys do it all the time because they can make a few bucks between parts and scrap, offer to buy the whole A/C, brackets, and dash out of it. I've never swapped A/C in so I don't really know how different anything is in the HVAC system. You may need the plenum that the evaporator goes in too along with the heater core, as I believe they're different part numbers.. One way or another the whole dash is basically coming out. So better to get more parts than less and compare as you swap things over. If you were local I could have just given you basically a whole setup from deleting it out of my trail XJ.

Which engine do you have? I would return what you have regardless. It will be hack to install it.

Are those internally or externally regulated? I'm guessing external.