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Author Topic: Thunk! Noise  (Read 2830 times)
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slave2010
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« on: July 28, 2011, 01:36:22 PM »

I've been noticing for a while this strange "thunk" noise when I accelerate from a dead stop, OR come to a stop, then reverse.

It's strange because there are times when I don't hear it.  Doesn't seem to be dependent on which way the wheel is turned.

You can just about feel it too, directly underneath the floorpan on the driver's side front.

More then annoying now, but also worry-some.  Anybody had anything similar?
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goodbye friend, thank you for your service... you always got me home, and I thank you.
ar4s1
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« Reply #1 on: July 29, 2011, 08:55:48 AM »

Sounds to me like he CV joints are going out on one or both of your drive axles.
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jrophoff
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« Reply #2 on: August 14, 2011, 02:46:46 PM »

I get that too. Sounds like it is coming from the drive shaft going from the from the front to rear. The clunk I am hearing sounds like a bad U Joint. However, I am not sure if these vehicles have a U joints.
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slave2010
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« Reply #3 on: August 14, 2011, 05:53:43 PM »

I get that too. Sounds like it is coming from the drive shaft going from the from the front to rear. The clunk I am hearing sounds like a bad U Joint. However, I am not sure if these vehicles have a U joints.

A guy I know that has his own garage had me bring my Tek over (for free!)  Lifted it up, tortured it a bit, he pried at the joints, etc... had me start it, one front wheel down, throw it in gear (carefully, torque it a bit).

His conclusions were that it wasn't trans related, not a ball joint or anything like that.  He did find the sway bar bushings looked warn and cracked, and that was the noise.  No clunking while driving, or moving really above 10mph, and really just when there's the right combination of torque, control arm pitch that you get the thunk and it snaps the sway bar bushings.  The clunk is also UNDER the floorboards, practically under the pedals.  The bushings make sense, considering where they're located.

Hopefully helpful to anybody that reads this, when and if I replace the bushings or something else goes, I'll make sure to update this post, so somebody else will have the answer = )
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goodbye friend, thank you for your service... you always got me home, and I thank you.
jrophoff
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« Reply #4 on: August 15, 2011, 07:29:00 PM »

Both my ABS and AWD light were on for a while. I just fixed it, and the clunking has gone away. There does seem to be clunk in the rear when I go over bumps. But I think that is from the knuckles on the rear wheels.
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