Recent content by Robs92XJ

Yep. Take a look at everything involved in turning the wheels, starting at the steering wheel. Check that the steering wheel is turning the stub shaft where it enters the engine compartment. Where the stub shaft meets the upper steering shaft there is a splined joint with a pinch bolt to hold...

This. Also, how many miles are on the motor? My '92 with 225k has similar numbers to yours except at hot idle it doesn't get lower than 20 psi. If you can verify that you only have 10 psi then that is a problem. If it's borderline, I suggest running a thicker oil than 10w30, at least...

OEM-style replacements are easy to find at the chain auto parts stores. The OEM track bar has a ball-stud fixed to one end that is non-serviceable. The bushing on the axle end would be a pain to replace, if you'd probably have to do some digging to find a replacement bushing. I would just...

There will be some side-to-side, up-down play at the slip yoke into the TC. The yoke is just a slip fit (hence the name) over the splined output shaft in the TC. There is a bushing (a thin metal sleeve, really) that rides over the outside of the yoke. That bushing can wear out but 1/16"...

Nowadays I like to use indian head gasket shellac with the paper gasket for this job. It is tackier than RTV right out of the bottle, which makes it easier to keep everything lined up. Cleans up right away with acetone, no scraping or scrubbing. I put a little bit around the inside of the...

Well the AC puts more load on the engine and dumps hot air in front of your radiator. If there is a problem with your cooling system it is going to be worse with AC on. Does the electric fan come on when the AC is running?

Are you running hot at idle, at speed, or all the time? Can you describe the funny smell? If you've got any of the common 4.0 oil leaks (especially valve cover gasket) you can cook the oil stuck to the outside of the engine and get a nice burning smell. Oil pressure should not be...

Not sure if this applies to a 2000, but on my '92 there isn't a stop on the pump shaft to let you know when you've got it on the right amount. You could bottom it out on the shaft but then it will not be aligned with the other pulleys. Before you remove the pulley from the old pump you are...

With a 6.5" lift and a wandering problem I would be looking at caster. You need to figure out what yours is. I believe GoJeep has a decent write-up on DIY alignment, or take it to a shop. If you find your caster is way out of spec, you can dial some back in with your adjustable arms but it...

If the oil is coming from worn cylinder walls & piston rings, I have heard good things about RESTORE oil additive. It contains some sort of dissolved metal that plates out onto the cylinder walls, restoring compression on old engines. Not sure how long it takes to work, so I can't tell you if...

Have you had an alignment? If bad alignment and wheel balance have been ruled out, that basically leaves the driveshafts and u-joints. First thing to try is pull the front shaft out and test drive. If the problem goes away it is something to do with the front shaft. If not, take a close look...

This may not apply at all to your TC, but a '92 vintage NP231 uses special 5/16" screws with 5/16" heads. The undersized heads tend to round off, and when they do they often get replaced with standard 5/16" screws, which have a 1/2" head. That may be where your 1/2" heads came from. If thats...

headbolts.com has head bolts for most years of 4.0/4.2, for about $45. There were some slight differences in the set I bought for my '92, compared to what came off - the studded bolts that go on the driver's side of the head did not have flanges on the bottom, and the head side on those was...

The slip yoke will have some movement, that is normal. If you think the slop is excessive, there is a bushing inside the extension housing that can be replaced. It is good to do that when you replace the rear seal. I did this on my NP231 a week ago. By redi-sleeve, do you mean sleeving the...

The track bar is supposed to prevent the axle from moving laterally. You can get play at the TRE on the frame mount, or at the bolt on the axle bracket (usually the hole gets widened and allows the bolt to wiggle around inside). Get under the car with your wife turning the wheels again, and...