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Old 09-26-2018, 02:56 PM
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Vibration and knocking noise

A little bit of background on the ride - an otherwise stock 2017 jku sport. 2.5 inch lift, 35 inch BFG KO2's, on 1 inch spacers.
A few days ago, I starting feeling a little vibration in the floorboard up to the steering wheel, as well as noticed a faint knocking noise that seemed to come with the rotation of the wheel. Thinking this could be a case of tires being out of balance, I had them rotated and balanced. This did not fix the problem. The knocking noise is still very clearly coming from the front driver side wheel.


The knocking noise increases to match the speed I accelerate to, and if I let the car coast to a stop, matches it the whole way down as well. If I step on the brakes at any point, the car stabilizes and the knocking stops.


I checked the stupid stuff and made sure all the lug nuts were tightened. I've checked the brakes for any debris or for wear - the brakes are okay and there is no debris. I also checked the driveshaft - joints are all still good and the boot is in tact. Everything looks good underneath.


I am hesitant to think this is a bent axle or flange only because I have barely done any wheeling in the car and it was months ago just going through soft Florida sand - I can't think of anything that would have damaged it to that point.


Anyone have any ideas?

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Old 09-26-2018, 08:40 PM   #2
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Check the spacers re-center and tighten. Just a guess.
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Old 09-28-2018, 05:06 PM   #3
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Check the driveshaft cv joint(transfer case end) for play, and/or grease all over the underside floor board around cv, and your unit/wheel bearings
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