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Unread 01-25-2014, 07:37 AM   #1
BackRoadSeeker
Registered User
1997 ZJ 
 
Join Date: Oct 2013
Location: Richmond, Virginia
Posts: 94
New rear suspension clunk...

Another day, another noise...

I'm in the process currently of refreshing my Jeep's suspension, and it's fighting me every step of the way. The current issue I'm having is a clunk over slight bumps in the rear (sounds like the passenger's side, I THINK it's the rear but it's hard to tell).

Here's what I've replaced thus far:
  1. 2" BB and Rough Country N2.0 shocks - they are the right length, already verified that.
  2. New Moog front sway bar bushings and new front greasable sway bar links. Haven't added the grease yet...
  3. New Moog rear sway bar bushings.
  4. New rear tailgate bump stops (mine were literally gone and almost metal on metal)

I drove the Jeep around after installing the rear bushings first, and it handled like a dream; nice and quiet and tight. It was only AFTER I added the front sway bar stuff that I started getting the clunks. To be fair, it's been cold as balls out here, -5 *F yesterday with the windchill.

Looking for some insight here. Once I get a semi nice day, I'll jack it up and have a feel around for any weak points. The fact that the clunk appeared so suddenly leads me to think it isn't front/rear track bar or control arm issues. No death wobble/tracking issues with the BB installed either.

Thanks folks!

__________________
- James
'97 5.2 Limited, just rolled over 80,000 miles!
2" BB, 245/75/16 Cooper AT3's, Kolak 3" Exhaust
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Unread 01-25-2014, 07:52 AM   #2
newfieZJ
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1995 ZJ 
 
Join Date: May 2008
Location: , Alberta
Posts: 6,478
Few things to look at . Make sure your endlinks on the rear are not broke . Mine snapped right off , and clunks on small bumps . Just a few push/pulls on the bar each side , you will soon know if an issue .

Shock bolts loose ? I slide under on my dolly , push up and down and look at the shock bushings . Had this issue too , same small bump clunk .

Inner splash shields , rear bumper cover , hatch can all have clunks . Couple love taps here and there , worth a check .
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Unread 01-25-2014, 08:00 AM   #3
PolkaPower
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1998 ZJ 
 
Join Date: Aug 2011
Location: The Abyss, MD
Posts: 16,237
I have a clunk in the rear pass side too. It's not inside the truck definitely under. It's not over bumps though. Mine happens under 25MPH when I give it gas then let off. Sounds like something metal sliding forward about an inch. Too cold to take the wheel off though. I am suspecting a rear shock, possibly rear drive shaft needs to be greased at the slip yoke, or maybe something with the brakes. I won't know until I take it all apart and look. I'm starting with the shock.
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Unread 01-25-2014, 08:02 AM   #4
BackRoadSeeker
Registered User
1997 ZJ 
 
Join Date: Oct 2013
Location: Richmond, Virginia
Posts: 94
Quote:
Originally Posted by newfieZJ View Post
Few things to look at . Make sure your endlinks on the rear are not broke . Mine snapped right off , and clunks on small bumps . Just a few push/pulls on the bar each side , you will soon know if an issue .

Shock bolts loose ? I slide under on my dolly , push up and down and look at the shock bushings . Had this issue too , same small bump clunk .

Inner splash shields , rear bumper cover , hatch can all have clunks . Couple love taps here and there , worth a check .
Yup, I was thinking possibly the shock bolts; pretty close to ripping off or at least trimming the hell out of the inner splash shields, they make any kind of work with the tires on next to impossible. Any reason NOT to do this? They can't do that much....this is a truck that'll be washed underneath regularly. Already trimmed away around the front sway bar connectors.

I'm hoping a nice poke around will help me track down the issue... I also need to tinker around with the hatch bump stop bolts, they seem to be a tad too far out now, VIC said it was open yesterday and I really had to slam it to get it to shut up.
__________________
- James
'97 5.2 Limited, just rolled over 80,000 miles!
2" BB, 245/75/16 Cooper AT3's, Kolak 3" Exhaust
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Unread 01-26-2014, 09:07 AM   #5
BackRoadSeeker
Registered User
1997 ZJ 
 
Join Date: Oct 2013
Location: Richmond, Virginia
Posts: 94
Update, nailed it! It was a loose rear shock. I re-torqued it to spec and all is well again (for now.)
__________________
- James
'97 5.2 Limited, just rolled over 80,000 miles!
2" BB, 245/75/16 Cooper AT3's, Kolak 3" Exhaust
BackRoadSeeker is offline   Reply With Quote Quick reply to this message
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