Knocking sound drives me nuts

[mindbomb]

My KJ started making this rattling sound (vibration/knocking) coming from the rear passenger side while car is rolling. It's driving me crrrrrrazy. I thought it's the rear seat belt, the ****** electric window motor in the rear right door, the tonneau cover or maybe even the rear bump stop (hockey pucks) came loose, maybe the roof rack cross bars?!. None of those.
Everything is nice and tight yet this rattling sound continues still the car stops.
Ideas?

I got a long drive coming tomorrow and afraid I'll have to commit myself right after. Help!


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[rjkj2005]

Sounds like a bad rear upper ball joint.

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[RenKJ]

Have a passenger sit in back and put their hands on the body work on either side, if they feel/hear it on one side could be loose upper shock bolt on that side , otherwise prob upper ball like rj said

 

[tommudd]

Guess would first be tri-link, then shocks
But could be as simple as exhaust etc.

Sounds like that irritate me. Last trip up from Winston Salem had a squeak from the roof rack somewhere /stopped shook it, checked all bolts etc, all tight. Got home after 7 hours of listening to it off and on , sat in the garage over night and hasn't made the sound since! :favorites68::favorites68:

 

[TwoBobsKJ]

Guess would first be tri-link, then shocks
But could be as simple as exhaust etc.

Sounds like that irritate me. Last trip up from Winston Salem had a squeak from the roof rack somewhere /stopped shook it, checked all bolts etc, all tight. Got home after 7 hours of listening to it off and on , sat in the garage over night and hasn't made the sound since! :favorites68::favorites68:

My new (to me) Commander has a rattle/knock like that in the driver's rear. Can't pinpoint it and I'm getting very irritated. It only happens on very sharp bumps like frost heaves and large cracks. :favorites68:

The KJ has a front end knock - but only in the summer! The past few weeks it's as quiet as a church mouse :Insane:

Bob

P.S. Tom, time to clean out your PM's. Can't send you a reply till it's emptied out :gr_grin:

 

[HoosierJeeper]

For the Commander, is it possible that the third row seats could be rattling? I'd throw some weight on them and see what happens.

 

[TwoBobsKJ]

For the Commander, is it possible that the third row seats could be rattling? I'd throw some weight on them and see what happens.

That's a great idea!

I have them folded down most of the time but that's exactly where the sound is coming from.

Thanks HJ :waytogo:


Bob

 

[mindbomb]

Sounds like a bad rear upper ball joint.

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Thanks for the advice.
Any simple way to verify that without jacking up the car?


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[HoosierJeeper]

Have someone push the Jeep back and forth and watch the tri link, see if it looks sloppy. Check the joint for tears too.

 

[Gunpowder]

My tailgate rattles. The support brace spot welds inside I think gave way. I think my wife backing it into a light pole helped it come free lol also check the tire mount.

could be coming from somewhere else too. I have a loud bang from the back seat of my silverado. I tracked it down to a loose FRONT of my passenger rock guard. Interesting it is loose in the front right but I hear it coming from behind me lol

 

[tommudd]

Sounds and vibrations can sometimes travel a long ways at times.
Irritating for sure , I don't do squeaks, rattles, pops or bangs.
Have to track them down.