Thump/clink/jingling in 2wd/4wd, worse when slowing down or turning (drags also)

[Function > Form]

Hey all - I'm looking for some insight with a problem I can't figure out.

We hit a bump on Fisher northbound this weekend at about 50 kph on the left front side. It was a manhole cover that was sunken down about 5-6". I was in Full-Time (~AWD).

Starting after about 100 metres or so later when slowing down, it makes a repetitive thump thump thump sound and some jingling, some single clinks. It drags (slows us down) but doesn't pull to either side. When speeding up you can hear it cycle...

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[Jimbog]

Check your anti rattle clips on your calipers.

 

[mucovich]

did you check with the wheel off the ground check to see if there is any play? up down and side to side?

 

[Function > Form]

Check your anti rattle clips on your calipers.

Based on the sound, it sounds like a much larger piece causing it, but I will check. That would explain the pulsing while coming to a stop, especially how it shows up sometimes and not others...possibly a hot rotor. But why the jingling and clink noises? Clink could be the pad tab rattling in the caliper, but....dunno about the jingling?

did you check with the wheel off the ground check to see if there is any play? up down and side to side?

Not yet - planning to check tonight. Should've done this when I re-torqued the lugs.

 

[junkpile]

Many possibilities for sure, but it kinda sounds like maybe a blown wheel bearing. If it's really bad it can cause all of those symptoms

 

[Function > Form]

Thanks guys, I took it for a slow spin at lunch and I'm leaning heavily towards the wheel bearing being close to a catastrophic failure and it's certainly 'really bad'. She's getting parked until I get one in. If it turns out to be a wb, I have a so-so trail spare I may put on for now until I get a new one.

Local Napa only had a Raybestos $195 1 yr warranty - would prefer Timken/skf at 3 yrs.

Is Raybestos ok for Jeep WB's?

 

[junkpile]

Call CAPS they should be able to get you something in or under the $100 range

 

[2Greys]

Cheapest I have seen a Timken was $144US before shipping from Rockauto, I replaced both of mine this summer on my Liberty

 

[Function > Form]

This has to be way worse than wb's. Left one I replaced a few months ago, still good. Right one is also still good. No play in any direction with the rack locked.

All brake hardware is installed and torqued, all suspension hardware and all balljoints also. Checked the axle nuts and they are also fine as are all 6 of the E14s behind each of the hubs.

Driveshafts both good, no play in any direction, boots fine, driveshaft u-joints? (x things think they are u-joints) also good. All rear suspension is a-ok also.

Rotating the wheels while in park with the front end up on jackstands, there is no noise in either direction, while rotating either side.

More info -
In 2wd, sound goes away on accel, comes back like this right after decel: clink (like a small sledge on a solid metal post sound), thump thump thump thump thump about every foot of pavement but then goes away when cruising above 25 kph.
In part-time, sound goes away on accel, comes back like this on decel: clink, (softer) thump thump thump thump same frequency.
In full-time, sound goes away on accel, comes back the same, but even less pronounced.

Is it possible the diff grenaded??? Or is the 4wd selector fubared? Liberty off road machine ftw. fml.

 

[mucovich]

possibly, may have chipped a tooth or two when you hit the pothole. did you check the control arms? perhaps the impact destroyed a bushing?

 

[junkpile]

It seems the noise dissipates slightly when in 4wd? So from the new info it sounds to me like the noise must be coming from the rear. Have you had the rear wheels off? Checked your rear brakes? Disc in the rear? The park brake shoes may have come apart

 

[Function > Form]

It seems the noise dissipates slightly when in 4wd? So from the new info it sounds to me like the noise must be coming from the rear. Have you had the rear wheels off? Checked your rear brakes? Disc in the rear? The park brake shoes may have come apart

DING DING DING

thank fucking god.

Diff is not grenaded, just that dumb park brake mechanism. Who knew it could make such a horrible sound...wondering now if it was causing other issues. Correct me if I'm wrong, but I don't think the 'clink' should happen - 2greys - did you hear any noise like this with yours, or just that rattling sound you described? The thumping is probably just the shoes dragging, but ideally should not be thumping, they should just grab/slide.

Thanks again to all that responded, especially junkpile.

 

[2Greys]

My only issues with the parking brake is it wearing out. Never had the thumping noises

 

[Function > Form]

Thanks man. weird

 

[junkpile]

Phew!!
In glad it was something simple, cheers.

 

[Function > Form]

Well, it wasn't the parking brake.

It still made the noise, especially loud in 2wd, worse after going on the hwy. I was suspecting the intermediate shaft and psgr half shaft based on some internutz sleuthing. Before I even got as far as pulling them, I jacked it up at all 4 corners and spun the wheels to see if I could isolate the sound.

The friggin front driveshaft is clinking around again...so I pulled it (the boot was completely good, no tears, nothing). The grease is so-so. A bit caked and dry, likely was getting too hot and got cooked. The cv end when removed is LOOSE and rattling like a ghost in the attic. I just left it off for now, covered both ends of the TC and the pinion end of the transmission and ordered a new head. The sounds are all gone. I've driven all over at all speeds and conditions and can't seem to replicate it.

Good thing this happened during the worst weather we've had in a month...

Hopefully this is all of it, but we will see. I suspect it's only part of the problem as it is so cold now that I might not be able to replicate it (it was getting worse when on hwy >10 mins).

 

[junkpile]

Shitty! Curious, how much for the cv? Is it worthwhile finding a spare at Kenny's?

 

[Function > Form]

It's a common weak point on Liberties. $85-100 incl. 'quick' shipping ($50 for the actual part). For that little and for how often they go, I'm staying away from KUP.

Curious...since it has a common TC (242), is this a problem on XJs or other jeeps?

 

[2Greys]

I had the boot tear on mine at the TC. Replaced it and yeah it was about $50 from Rockauto plus shipping. TJs since they have u-joints instead of CVs have to pay attention to the centering ball on the front driveshaft. If you don't it can get angry sparrows which when it seizes will break your TC case.

 

[Function > Form]

OK glad I got a good price.

I realized after posting that they were quite different. Wish I had an old school set up like that instead...u-joints have a 'slightly' longer service life lol. I'm guessing XJs are a similar setup.

Oh well. Shitty design. I'm keeping this (and a few other things...) in mind for the next vehicle.