Jerry

Bit of a head scratcher eh! It never used to do this and it seems to be intermittent. 🤔 It'll probably just stop doing it at some point lol 😁 There's minimal oil leaks, a little around the valve cover but otherwise ... Only 150k miles on it. wtf I'll just keep on Jeeping on and ignore it then. Thanks for the input chaps. Let you know if it explodes 👍

Hmmm!? So I put on a new filter and everything was normal again ... for a short while. So it seems the filter is not the cause. I don't think the sensor is the issue because it appears to be showing what I'm physically seeing which is ... on removing the old filter after leaving overnight, it was completely empty of oil ... like actually EMPTY, completely dry. On start up in the morning the light stays on for the amount of time I'd think is about right for the filter to fill up then goes out, about two or three seconds. Then on starting again after a couple of minutes it goes out immediately as it should. My local parts guy suggested the PCV valve could be clogged causing pressure in the crank case side of things and therefore pushing the oil back through the system. Does that sound possible guys? If so, where does that live under the hood? So I can take a look at the weekend. Cheers all, happy Friday 😀

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Thanks for the pointers guys. I'll get a new filter from Napa. I'm told they are good quality. I'll clean the connections anyways but my observations point to drain back. Once the motor has been started and ran a couple of minutes, when I shut her off and restart the light goes out immediately as I'd expect, indeed as it always had before 👍 Does anyone know if there's a drain back valve in the pump too? Or only the filter?

OK, thanks I'll check that out. Maybe ask my local garage to pressure check the system. Guess it could simply be a dirty connection to the sensor.

You mean the pressure sensor by the filter Pete? and Nah, I like my simple idiot lights 😁

Not sure. I'll look into that 👍 What are you thinking? No non return valve?

Seasons greeting MJ guys 👋 Old Timer here 🙂🛻 Quick question for the experienced 4.0L mechanics out there if ya don't mind. My daily driver MJ 4.0L that's been running faultlessly for me over the last 13 years through thick and thin, now has an issue I'm worried about 😕 The oil light (idiot light, no gauge) has suddenly started staying on for a few seconds after it fires up. It's never done this before. My first guess was the oil filter non return valve got stuck, so I swung by jiffy lube and got it changed but that made no difference. Once running the light stays out even at idle and all sounds well in the motor bay. No leaks. I can stop for a half hour and restart and the light goes out immediately as it should. But over night the problem comes back. To me this all sounds like the filter draining back. But how likely is it for a new filter to also have a failed non return valve? Is there another explanation you can think of? Is there a built in non return somewhere that could have failed? Sensor maybe? 🤔 Any help or pointers appreciated. I don't want my DD wearing out before it's time because it's oil starved for a few seconds each morning! Thanks in advance, pic for attention 😉

That's interesting stuff, i'd never have guessed they'd do that.

And that is today's plan :)

Thanks for the info guys. I'll get an angle finder for verification of caster.

So I installed a fresh steering box (what a job!) and I've had the alignment done. It's a vast improvement from before but it still drifts to the RIGHT on straight level roads. The alignment results show the camber angles slightly above spec and the caster angles 6.8LH/7.1RH (optimum 7.5). From what I've learned the camber is ok to be slightly off but the caster will cause instability problems which is what i've been experiencing. If I add/remove caster shims to adjust the caster angle must I do the same both sides? The alignment tech I spoke to said you cannot independently alter the caster because it's a solid axle. Is he correct? Or is there enough flex in the axle that adjusting one slightly more than the other will help bring them equal. The best conclusion the tech could offer after much head scratching was the tyres are 7yrs old now so it's probably something to do with the tyres. I'm not so sure about that, I've rotated the tyres all ways and the same effect is present. TIA for any helpful pointers :)

Thanks for the advice guys. So my local pnp has some 93 & 95 Grand Cherokees. Think I'll go pick up a box this weekend. I've not changed a steering box before, any special tools I might need to take for removal?

Track bar, got it, I'll investigate that as well this weekend. Thanks for the info!

Thanks for the suggestion, I'll check that uj. And yes, it's power steering.

Hi guys. In looking for advice about steering problems. There's something amiss in my steering system and I'm not having much luck working out what the issue is. I've had numerous things replaced but nothing has cured it. Two garages have looked at it and found nothing. All the joints have been checked and confirmed to be OK. I've tightened the over centre in the steering box and that's ok now. It did need tightening a little and after doing that the steering issue was even more noticeable. It's unstable, won't hold a smooth curve in a turn and on the straight it feels like it's always pulling one way or the other. The truck (Diablo) has stock suspension, 1.5" wheel spacers, airbags (deflated) and Goodrich tires. The alignment has been checked aok also. Any ideas guys? Thanks in advance.

Here's the link http://www.t-mfab.com/store-3/cherokee-xj-comanchee-mj-parts/ T & M Metal Fabrication

Just sharing. Randomly saw these guys on Facebook. Small company, they make frame stiffeners, grills, rear light covers and other things for Comanches and Cherokees. The rear light mod will be handy for a lot of MJ'ers. https://m.facebook.com/profile.php?id=697135410359554

Good to see other folks using their MJ's for camper rigs. Didn't build mine, I took the easy option and just loaded an old import slide-in. Good to go :)

Thanks for the info hornbrod, very helpful.

Thanks Mr Shelby. I'll check that out AND find another shop! :)

Thread bump ... Hi guys :) So after getting a shop to check out all the steering angles it turns out that it's all good except the RH caster angle is @ +10° instead of the factory spec 4° it should be. Progress! I now have a good idea what's causing my shimmy. It seems I have a minor case of "death wobble"! The guys at the shop said the caster angle is non adjustable and they can't help but I've done some CC forum searching and read that you can get shims to make caster angle adjustments. Is that right? If so can somebody post a photo showing where the shims go? And, am I'm barking up the right tree here? PS. All bad joints and bushings have been replaced now to try and eliminate them as a cause. Thanks :)

Cool I'll investigate those two items. Thanks for the input :)

Howdy fellas. As thread title, looking for input on my wayward MJ. The symptom is a sudden turn in on high speed corners (60mph+) resulting in what I can best describe as a 'weave'. It tracks true, hands off the wheel braking it's all good, brakes in straight line no issues. It's only at higher speeds the problem shows up and only in RH corners. I'll try my best to describe it: Rolling along at anything above 60mph I'll turn into a corner and it's fine but as I increase the turn angle there's a point when it suddenly turns in hard like I've yanked the steering hard but I haven't. This then develops into a weave as I correct it and the cycle continues until I slow down or straighten up. Boing boing boing aaarg :eek: :eek: I've checked all the suspension joints as best I can without a hoist and nothing appears loose or worn. The truck is totally stock, no lift or big tires, nuffin'. I rotated the tires recently to rule them out too. Any ideas guys? Thanks in advance :)

Well thanks for looking anyways Jim :waving: Saved me a trip to the wreckers to find that out (in the rain & the dirt & slush) I''l have find a new wrecking yard that has some MJ's :driving: And no! no-one has pride in their work anymore :nuts: