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Old 03-17-2013, 12:56 PM   #1
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Help diagnosing "clunk"

So ive been noticing a "clunk" on take off in my auto on the shift from 1-2 and almost a hesitation that should be non existant in a vehicle with 30K. im thinking driveshaft U-joint, but im not completely sure and id like to have a better guess before i head to the dreaded dealership for warranty parts.

now the problem only exists on a hard acceleration and is not ON take off but after the transmission shifts from 1-2, feels like a clunk or that something is seriously loose.

on a light take off theres almost no problem with a loose feeling and the DOES not happen in every gear shift, just 1-2.

Any help?

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Old 03-17-2013, 01:15 PM   #2
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U joints make a pinging sound when they get worn. But the stock JK shafts don't have them. It could be a lot of things. Wore out bushing in control arm are one thing that comes to mind.

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Old 03-17-2013, 07:18 PM   #3
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which control arm are you thinking? front or rear?
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Old 03-17-2013, 07:35 PM   #4
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Oh it could be a lot of things. I was just saying the first thing that came to my mind. But if it was a bad bushing odds are it would be a rear one.

Things that also come to mind that I have heard clunk when shifting gears are Carrier bearings in the rear diff, motor and tranny mounts, and something lose in the tranny. Could be one of countless things
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Old 03-17-2013, 07:38 PM   #5
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Originally Posted by WatchThis! View Post
U joints make a pinging sound when they get worn. But the stock JK shafts don't have them. It could be a lot of things. Wore out bushing in control arm are one thing that comes to mind.
The front does
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Old 03-19-2013, 08:07 PM   #6
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what would it be if its only on straight away driving? its nonexistant on turns
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Old 03-28-2013, 07:48 PM   #7
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bump

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