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Unread 07-21-2015, 06:03 PM   #1
Lyoungman
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Join Date: Jul 2015
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This thud is driving me crazy!

I have a 2012 Wrangler sport unlimited. On windy days there is a thud under my front wheel wells. At first I thought it was my after marker mud flaps, I removed them. And still today thud. Im always going straight at at high speeds 55/70. Has anyone experienced this. Im thinking its my wheel well liners, they are flimsy and dont appear to be attached well. Anyone else have this issue, or am I losing my mind!!! The dealership has looked in the past, all looked well.

Hoping for a cheap fix, suggestions are welcome.

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Unread 07-21-2015, 06:11 PM   #2
Jeff88
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2013 JK Wrangler 
 
Join Date: Apr 2008
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I searched around for a thud on our 2013 Rubicon that was making me crazy. I could not pin point where it was it sounded like it came from so many different places.

I finally found out it was the tailgate latch wasn't grabbing the retaining rod tightly and it would make a thud due to the slack whenever I took off, or slowed down or at other random times.

I had the girlfriend drive me around and do different driving maneuvers in a parking lot as I sat in all the other seats, including stuffing myself (I am 6'5 275) in the way back which is where I finally heard it.

Not saying it is what you have, but could be.
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Unread 07-22-2015, 06:36 AM   #3
mello
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Quote:
Originally Posted by Lyoungman
I have a 2012 Wrangler sport unlimited. On windy days there is a thud under my front wheel wells. At first I thought it was my after marker mud flaps, I removed them. And still today thud. Im always going straight at at high speeds 55/70. Has anyone experienced this. Im thinking its my wheel well liners, they are flimsy and dont appear to be attached well. Anyone else have this issue, or am I losing my mind!!! The dealership has looked in the past, all looked well. Hoping for a cheap fix, suggestions are welcome.
The inner fender liner is probably flapping against body mine was doing exact same thing on windy days. Put some double sided foam tape behind fender liner where it contacts body and see if noise goes away.
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Unread 07-22-2015, 08:41 AM   #4
yllwjckt07
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May not be related at all but I put on a bestop trektop nx a week ago and had the top open when driving on the highway last weekend. All of my passengers and I felt a "clunk" coming from under the vehicle. It was really making me concerned. I stopped on side of road and looked under vehicle. Everything looked ok. Got going again and the clunk remained. Something dawned on me that the only thing I had done recently was install the top. I closed the top and the clink was gone. It was resonating through the roll bars to the underside of the vehicle. Not sure if this could be what you are experiencing but worth a shot.
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Unread 07-22-2015, 01:02 PM   #5
motoguy1251
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2012 JK Wrangler 
 
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Location: Big Rapids, Michigan
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My hood jumps up in the wind, and when it comes down its got a thud to it.
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Unread 07-23-2015, 10:22 AM   #6
Lyoungman
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Thanks all, Im hoping mellow is right. My brother in law is going to design something to stop the inner wheel well liner from moving. Im hoping that is my fix!
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Unread 09-15-2015, 12:59 PM   #7
JDubbya
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Quote:
Originally Posted by yllwjckt07 View Post
May not be related at all but I put on a bestop trektop nx a week ago and had the top open when driving on the highway last weekend. All of my passengers and I felt a "clunk" coming from under the vehicle. It was really making me concerned. I stopped on side of road and looked under vehicle. Everything looked ok. Got going again and the clunk remained. Something dawned on me that the only thing I had done recently was install the top. I closed the top and the clink was gone. It was resonating through the roll bars to the underside of the vehicle. Not sure if this could be what you are experiencing but worth a shot.
Lyoungman, if you do have the trektop nx, you might want to consider what yllwjckt07 is suggesting. I had the same exact issue, it took me a bit, but I realized it was just that, the soft top flap bumping. The banging sound resonates and sounds as if its coming from below. If I am on the highway and want the top open, I bungee it down.
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Unread 09-15-2015, 01:07 PM   #8
JIMBOX
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I have retaining screws in my fender liners--you don't have any ???

Mine don't move at all !

Good luck

JIMBO
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Unread 09-15-2015, 02:13 PM   #9
222Doc
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sounds like the hood. THe stock rubber just dont do enough. If you removed the front lower air dam, that makes more air get under the hood.
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Unread 09-15-2015, 03:44 PM   #10
DV8Offroad
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If it is your inner fender liners you should be able to just do as mello said and put some double sided tape back there. If you have cut or aftermarket fenders you may have to figure out another solution. Our inner fenders were designed to help solve this kind of problem.

http://www.dv8offroad.com/fenders---liners.html

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Unread 09-16-2015, 01:13 PM   #11
Lyoungman
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It only happens when the tops is off and yes it's a best top I installed in the beginning of summer. I don't think it's the bars on top tho. The thud comes from underneath by my feet. I have secured the inner wheel wells but it still happens on a windy day.
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Unread 09-16-2015, 02:03 PM   #12
DV8Offroad
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Is the noise when you hit bumps to where it could be a suspension issue? Does it thud once then stop or continuous thumping?
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Unread 09-17-2015, 05:03 PM   #13
Lyoungman
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It's when driving and windy.. Flat roads..
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Unread 09-17-2015, 07:21 PM   #14
JohnRodriguez
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it's the back of your inner fenders, specifically the rear. if you get some body push anchors, the same as used truout your jeep, you can put a couple of them on the rear of the fender and It will take care of the flapping noise. I had attached my fenders to plug on the end of the rubicon rails I have installed on jeep. I've had my JK well over the speedo reading and it has no more noise.
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