Suspension "knocking" - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 9 (permalink) Old 06-27-2009, 03:36 AM Thread Starter
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Suspension "knocking"

I hope somebody out there can help. I remember reading a post a while back (maybe 9 - 12 months ago) about a knocking or popping sound from the rear suspension after installing a spacer lift. I have had mine on now for about 6 months and it just showed up. Any ideas or maybe the link to the other post?

Thanks,
Jeff
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post #2 of 9 (permalink) Old 06-27-2009, 09:10 AM
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Usually it is due to the rear shocks either loosening up, or the bolt is tight but is actually not holding the shock securely. Those of us with the Rocky Road shocks know this too well. We all add washers to take up the space between the mount and the shock.
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post #3 of 9 (permalink) Old 06-27-2009, 09:45 AM
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After I installed my BDS spacer lift I had a clunking/poping noise coming from the rear end. I re-torqued everything on the rear end and when doing so I found the driver's side rear upper control arm bolt loose. Once it was tightened to the correct specs the noise went away.




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post #4 of 9 (permalink) Old 06-27-2009, 06:57 PM
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Quote:
Originally Posted by JJSEBASTIAN View Post
Usually it is due to the rear shocks either loosening up...
THis was my problem. The bolts seemed tight, but I was able to tighten them further and the knocking stopped. I am using the stock shocks. Hopefully this is an easy fix for you!
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post #5 of 9 (permalink) Old 06-27-2009, 09:08 PM Thread Starter
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Thanks for the info. I will check into this, hopefully tomorrow... I will let you know if it works.
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post #6 of 9 (permalink) Old 07-04-2009, 02:04 AM Thread Starter
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So it turned out that the drivers side shock had loosened up and was causing the knocking. However, the shock bushing was destroyed so I had to change shocks. Fortunately I still had my stockers on the shelf so I have reinstalled them, at least for now. I uploaded a photo of the shock. Has anybody had this kind of trouble before?
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post #7 of 9 (permalink) Old 07-04-2009, 09:34 AM
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Quote:
Originally Posted by rem2506 View Post
So it turned out that the drivers side shock had loosened up and was causing the knocking. However, the shock bushing was destroyed so I had to change shocks. Fortunately I still had my stockers on the shelf so I have reinstalled them, at least for now. I uploaded a photo of the shock. Has anybody had this kind of trouble before?
I 've seen this on used Chevy pickups I've bought a number of times... if left unattended eventualy the frame would crack above the shock mounts too ...

I've used it a couple times to get the seller down on his price on Chevy pickups, "Ohhh, look here buddy, the frame is all craked out ... it will never saftey like this"

Jeep maintaniance schedule says to check those bolts every oil change, and after every off road use, and re-torque if needed.
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post #8 of 9 (permalink) Old 10-19-2009, 08:16 PM
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Does anyone's rearend bounce more after 2.25 RR lift and their shocks? Mine does, it seem like it killed the ride, but looks good.
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post #9 of 9 (permalink) Old 11-10-2009, 04:57 AM
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Quote:
Originally Posted by 07JeepXK View Post
After I installed my BDS spacer lift I had a clunking/poping noise coming from the rear end. I re-torqued everything on the rear end and when doing so I found the driver's side rear upper control arm bolt loose. Once it was tightened to the correct specs the noise went away.
Is there any way you could take a pic for dummies of this bolt I have done everything and STILL have a noise/popping/clunking. I have new axles, new end links, new swaybar bushings, and new struts. I have NO CLUE what is popping and it is driving me NUTS.
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