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1999 XJ, I6, AW4, 231, AC, Tranny cooler... My 1999's rad is starting to leak a bit, I have given it a thorough look but I've been thinking about swapping the HD rad that I pulled off my 1990 XJ before I retired it. It's the OEM HD type but with the steel tanks and 3row(?). It was hard to...

99XJ I6 AW4 NP231 A/C Some weird shit going on when I left work tonight. I first noticed that the fan and heater controls were not working after about 1-2 minutes. I know they worked when I first turned the engine over. Next I noticed the the airbag light stayed on for all of the 15min...

I finally convinced the boss and am getting one for xmas. I'm looking for information on what would be involved in getting my house wired up for this; I don't need step-by-step details, just the basics. I'd like to have a permanent outdoor receptical to plug into. I have a cement pad in the...

I've read all related posts; looking for any additional information specific to my case. 99 XJ I6 AW4 While out of town on training I suspect that the coolant froze over. Temperatures were quite cold, dropping to -37 degrees celcius (without windchill). Here are the details I received from...

99XJ I6 AW4 NP231 AC // Hellroaring Dual Optimas Looking for some technical advice regarding monitoring the charge on my batteries and also running the engine to recharge the Yellowtop. 1) what's the best way wire up a couple guages for each battery to show their state of charge (always on)...

'99XJ I6 AW4 NP231 AC Searched using above terms but not finding what I need. I have dual batteries (stock and airbox locations) and stock AC. I have a Sanden compressor out of my '90 XJ that I would love to put to use for OBA. Is there any way to get this belted up under my '99XJ? I've...

Will the 20 gallon fuel tank from my 1990 Laredo fit and work in my 1999? It'd mean one less jerry can to carry on the trail. I tried a search but came up empty...ha empty...get it.

I repalced the belt about six weeks ago and retightened it just recently. Today coming to work I noticed noise and found that the belt had moved out a track and by spinning the fan that the blades are just barely hitting the crankshaft pulley. I put the belt back in place thinking that by...

I replaced the manifold gasket and have since been hearing a kind of "compressor noise"....like a pssht pssht pssht pssht from the engine...it's most noticeable at high rpm at highway speed. It sounds like an air/exhaust leak at one of the cylinders maybe. I've checked all my bolts...

1990XJ I6 AW4 NP231 Cruise/AC Finnally got the 1990 back on the road and on my way to work it seems to be running rough / maybe misfiring. Really noticeable on the highway when I tromp on it. I've never had one rough before (beside when tinkering with map sensor/tps and so on) so I'm lost...

1999 I6 AW4 231 D30/D44 (open) RE 5.5 SYE I've searched this and think its probably the d44 pinion seal/bearing?? Goodies were just swapped over to this 1999 from my old 1990. The D44 was fine under the 1990. After putting it in the 1999 I get a chattering from the rear under acceleration...

1999 I6 AW4 231 RE SYE D44 (1987) open or closed???? I'm confused. I was under the impression that if you jack the rear up spin one side the other side will either spin with it in same direction (closed diff) or in opposite direction (open diff). Well the other wheel in this just stays...

I posted a few weeks ago about having no vacuum in my '87 beater for control of the heater airflow system Airlfow Control Problem Just wanted to say thanks and detail the fix for anyone else with similar problems. With some of your answers and after taking a good look at my 1990's set up I...

I problems to sort out before I do some swapping around of drivetrain / suspension components on my XJs this spring. Vehicle SPECS: 1987 Laredo 2dr I6 AW4 NP242 D30/35 3:54 1990 Laredo 4dr I6 AW4 NP 231 D30/44 3:54; RE H&T SYE, custom DS using a spare stock Front CV DS. 5.5"HD 1999 Classic...

1987 I6 AW4, no cruise, no a/c, My beater XJ I grabbed the D44 from. Common problem I know. Searching various forums hasn't solved this yet. But from what I read and what I can deduce from the FSM: Fan speed / blower / vac resevoir / heat-cool all works. System is simply stuck on defrost so...

1999 I6 AW4 A/C Cruise I noticed what seems to be a missing vacuum line off of my intake. If you look just below the MAP sensoe there are three ports in a line horizontally coming off the side of the intake manifold. My first one (the front one) has no line off of it...it's just...

1987 I6 AW4 no other options but tow package (D44 :clap: ). I was in the city the other day looking for a good '87 with D44. The plan is to trade it's rear with my 90's, sell our other new '99 and use the '87 for a DD. Long story short, after another fruitless/dissapointing day of looking at...

I have a new noise coming from the front passenger side since installing new upper and lower balljoints on that side. Before replacing the balljoints I used to get a pop from same area, but this is more of a metal sounding "crack". I have recently replaced and torqued spec the following: Front...

I have a lead on an '87 XJ waggy limited loaded including rear d44 with a bent shaft. What kind of aftermarket is there for this? I plan on going 4:56 w ARB anyhow. 33spline etc...? If I can upgrade the 44 I'll go ahead with the deal, otherwise I'm only going to get leather, glass, possible...

1990 I6, AUTO, AC, 3:55 w 31's My cooling system was barely making due this past summer so I'm planning on replacing my rad/hoses/thermostat this spring (rads probably clogged...fins are shot, hoses are old...probably collapsing, thermostat is new OEM). ...this winter I noticed that it's...