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Old 02-17-2009, 01:13 AM   #1
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Seeking Tech Help: Axle "clunk?"

Hey folks,

I was told by a fellow Camaro5 friend a few months ago that my current problem (along with the power window motors/wiring) was common.

I will preface this by saying my car is an automatic (I know, I know) -- and is stock, except for a K&N filter.

Here's the scenario: I recently kicked the car into passing gear and throttle shifted it into the next gear with tons of torque. I heard and felt the axle "clunk" and dig hard right after the shift, but it held steady, so I backed off and took it easy after getting to a safe distance from the other cars around me.

Ever since then, any time I take off from a start, or shift to next gear with any sort of power, the rear end "clunks" and I feel a slight hop or jump on the right rear wheel.

The clunk sounds and feels as if it is only coming from the right.

Someone told me that this is probably not actually a problem with the rear diff (gears, axle), but probably just a case of the supporting brackets that hold the rear end and suspension to the chassis coming loose.

Am I right? Has anyone heard of this before?

Take it easy on me, as I haven't looked into the tech details yet.

Just looking for some friendly advice.

Thanks!
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Old 02-17-2009, 11:21 PM   #2
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Quote:
Originally Posted by Sandman View Post
Sounds like a bracket if it's only during high RPM shifts...
Thanks.
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Old 02-18-2009, 02:04 AM   #3
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Uh oh...a clunk is never good.

:(

It might be something slipping in the axle, but then again...
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Old 02-20-2009, 02:41 AM   #4
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Quote:
Originally Posted by MrCool View Post
Uh oh...a clunk is never good.

:(

It might be something slipping in the axle, but then again...
Thanks for the reply. I'm guessing this isn't as common of a problem as I've been led to believe.

At least I got two replies. Thats a new record for one of my posts.

Sigh. Why do I even bother anymore.

Mods - please close this thread.

Thanks.

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Old 02-20-2009, 08:04 AM   #5
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No response because it's hard to answer "Why does my car go chugga weeeee brap when I go stop turn"

Get the car off the ground and look close at all mounting points for the axle and suspension and frame rails. Look for signs of pieces moving when they shouldn't. Twist the driveshaft, spin the tires, listen for noises.
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Old 02-20-2009, 05:05 PM   #6
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It could be a multitude of things. You should check: Transmission mount, Control arms, torque arm mount at the back of the transmission, sway bar bushings and endlinks, U-joints, Panhard rod (centrally locates the rear end is at the back of the rear and goes from side to side).

If all that is ok then pull the diff cover and look for metal chunks.
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Old 02-20-2009, 05:23 PM   #7
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I was definitely going to suggest tranny mounts, but I know 4th gens have some sort of control arm back there that is prone to working loose....I've only owned 3rd gens.

What I want to know is what you mean by shifting into a passing gear?
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Old 02-20-2009, 05:36 PM   #8
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Quote:
Originally Posted by MerF View Post
I was definitely going to suggest tranny mounts, but I know 4th gens have some sort of control arm back there that is prone to working loose....I've only owned 3rd gens.

What I want to know is what you mean by shifting into a passing gear?
3rd and 4th gens share an Identical rear suspension. Everything interchanges. The only difference is the rear-end on the 4th is 2 inches wider.
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Old 02-20-2009, 08:30 PM   #9
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check your transmission mount. replace it with a polyurethane one. and dont just look at it. put a jack under the transmission tailshaft and lift it up. or just replace it for good measure. also check the lower control arms and their bushings as well as the panhard bar.



tho one question... what do you mean by "passing gear"?
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Old 02-21-2009, 12:20 AM   #10
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Quote:
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torque boxes .

Camaro's don't have torque boxes
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Old 02-21-2009, 08:38 AM   #11
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Camaro's don't have torque boxes
AWD Camaro, yo.
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