[tumbler]

My 2009 Pro-4X CC has been very reliable for me, but now the front end is making an interesting noise.

Here is my best attempt to describe it:
- "Thud" noise
- Sometimes heard once, sometimes sounds like it is rotating (3-4 thuds, corresponding to wheel speed)
- Definitely in the front end
- No way to 100% reproduce it. Happens on speed bumps/curbs sometimes, not other times.
- TONS of mud/dirt/rocks got showed up there 2-3 months ago when mudding around. Have been power washing everything out recently.
- Sounds fine driving down the road. No shakes/rattles
- Visual/hand inspection last week didn't yield anything

If you have any ideas, please let me know, and I can look into them.

 

[Nissan4Life]

Worn front lower shock mount bushing.

 

[tumbler]

Like these? https://www.rockauto.com/en/moreinfo.php?pk=5605710&cc=1442675&jsn=403

I was looking into that, but it wouldn't explain the cyclical (rotating) sound I get sometimes.

Is there a test I can do before pulling the suspension apart?

 

[Sabretooth]

No those are the control arm bushings popping sounds to me more like your strut mount https://www.rockauto.com/en/moreinfo.php?pk=2999400&cc=1442675 or stabilizer shifting have done any front end work previously? like your shocks bushings? leveling kit?.
But you might start by poking around its 8yrs old grab a pry bar an look for movement it could just be a worn shock bushing(eye) your strut mount as previously mentioned, the stabilizer mount or end links or even those the control arm bushings lower/upper. If everything checks then move onto your CV's an hubs

 

[tumbler]

I can check my maintenance spreadsheet when I get home, but I have replaced all QTY4 shocks with new Bilsteins and replaced the front end sway bar bushings in the last 8-10 months.

 

[tumbler]

Turned out to be the wheel bearings.
Power washing + mudding + original bearings = bad news bears

 

[phatB]

ah glad to see you found the issue. always frustrating trying to figure out mystery clunks.
if you lifted the corner of the truck could you grab the wheel and wobble it back and forth, like it had a lot of slop/play in the bearing?

 

[tumbler]

I didn't check, because of how terrible it sounded.
I kept the old bearings to show friends. They sound like they have sand or rocks inside.