Front end clunk sound - JeepForum.com
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post #1 of 54 Old 09-06-2013, 09:34 PM Thread Starter
ZJNewbi3
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Front end clunk sound

I searched and only found old threads that didn't bring me to an answer. I am running a 2" BB also.

Every time I stop, or accelerate from a stop, I get a noticeable "clunk" noise from the front drivers side. I am unable to physically make the noise when I push on the Jeep to make it bounce. The noise started shortly after I blew my front drivers shock, but there is a new shock in there now. Any idea what it could be?


Just trying to keep her goin'!!
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post #2 of 54 Old 09-06-2013, 10:41 PM
Oldfrog
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Control arm bushings or Motor mount. Original ? If so, replace them anyway.

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
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post #3 of 54 Old 09-06-2013, 11:21 PM
jabba974
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Check your swaybar links/mount bushings...Could also be a ball joint or track bar...
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post #4 of 54 Old 09-06-2013, 11:26 PM
Scopez
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If you ruled out sway bar links already, check motor mounts with a pry bar or using the drive/brake and reverse/brake method. Transmission mount as well. Next would be control arms. It could be your springs, I'd try readjusting them in the bb since you stated you had that problem.

94 ZJ Laredo. 5.2 Crate engine. 6in JKS SA Lift. 33in Destination MTs. ARB Front Bumper.
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post #5 of 54 Old 09-07-2013, 06:25 AM
craddock01
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Just figured my clunk out it was the linkage where it goes through the little bracket bolted to the side of frame can u make the noise by pushing up and down on the tcase really hard? Wouldnt have believed it could be so loud and annoying sprayed it with lube worked it sprayed it over and over may need to change motor mounts to affect alighnment of pin going through the hole clunk came back in couple days (alredy changed tranny mount)
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post #6 of 54 Old 09-07-2013, 09:24 AM Thread Starter
ZJNewbi3
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Quote:
Originally Posted by Oldfrog View Post
Control arm bushings or Motor mount. Original ? If so, replace them anyway.
Replaced one upper (passenger side) and one lower (drivers side) I'm planning on replacing the other two soon. Will check motor mounts

Just trying to keep her goin'!!
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post #7 of 54 Old 09-07-2013, 09:26 AM Thread Starter
ZJNewbi3
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Quote:
Originally Posted by Scopez View Post
It could be your springs, I'd try readjusting them in the bb since you stated you had that problem.
Do you think hitting them over with a hammer would work? Those things are a beach to take off and put on

Just trying to keep her goin'!!
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post #8 of 54 Old 09-07-2013, 09:29 AM
Scopez
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Quote:
Originally Posted by ZJNewbi3

Do you think hitting them over with a hammer would work? Those things are a beach to take off and put on
Got a spring compressor? If not, you could rent one from a advance or somewhere.

94 ZJ Laredo. 5.2 Crate engine. 6in JKS SA Lift. 33in Destination MTs. ARB Front Bumper.
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post #9 of 54 Old 09-07-2013, 10:39 AM Thread Starter
ZJNewbi3
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Quote:
Originally Posted by Scopez View Post
Got a spring compressor? If not, you could rent one from a advance or somewhere.
We used compressors from napa. Even with the dang things compressed my buddy and I were straining to get them in. Oh well, if it makes things safer I guess we will have to do it.

Just trying to keep her goin'!!
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post #10 of 54 Old 09-07-2013, 11:00 AM
Scopez
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You could put the Jeep on stands and let the suspension droop as much as possibly. Undoing the sway bar links should give you some more droop. Look up some IronRockOffroad directions on the BB install, that'll tell you what to loosen for the most droop.

94 ZJ Laredo. 5.2 Crate engine. 6in JKS SA Lift. 33in Destination MTs. ARB Front Bumper.
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post #11 of 54 Old 09-07-2013, 01:17 PM Thread Starter
ZJNewbi3
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Quote:
Originally Posted by Scopez View Post
You could put the Jeep on stands and let the suspension droop as much as possibly. Undoing the sway bar links should give you some more droop. Look up some IronRockOffroad directions on the BB install, that'll tell you what to loosen for the most droop.
Thanks man! I also noticed the clunk sometimes happens during right truns, same side, same noise. Would that rule out motor/tranny mounts?

Just trying to keep her goin'!!
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post #12 of 54 Old 09-07-2013, 01:28 PM
Oldfrog
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Clunk...or more of a "pop"?
If it's a pop ( higher pitched sound) it may the the sway bar end link.

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
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post #13 of 54 Old 09-07-2013, 01:37 PM
Scopez
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Quote:
Originally Posted by ZJNewbi3

Thanks man! I also noticed the clunk sometimes happens during right truns, same side, same noise. Would that rule out motor/tranny mounts?
It should. Wouldn't hurt to do the drive/brake and hold the throttle just enough to where the tires don't spin. Same for reverse. It's starting to sound like your track bar though...

94 ZJ Laredo. 5.2 Crate engine. 6in JKS SA Lift. 33in Destination MTs. ARB Front Bumper.
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post #14 of 54 Old 09-08-2013, 09:29 AM Thread Starter
ZJNewbi3
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Quote:
Originally Posted by Oldfrog View Post
Clunk...or more of a "pop"?
If it's a pop ( higher pitched sound) it may the the sway bar end link.
I'll try to get audio of it today and post a video of it

Just trying to keep her goin'!!
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post #15 of 54 Old 09-08-2013, 09:31 AM Thread Starter
ZJNewbi3
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Quote:
Originally Posted by Scopez View Post
It should. Wouldn't hurt to do the drive/brake and hold the throttle just enough to where the tires don't spin. Same for reverse. It's starting to sound like your track bar though...
track bar...hmm...i dont think we fiddled with it during the lift but it never hurts to check

Just trying to keep her goin'!!
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