LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

clunk from rearend

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Old Feb 11, 2004 | 04:20 PM
  #1  
m_morrison14's Avatar
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From: Charleston, SC
clunk from rearend

also posted this in drivetrain, any ideas

did a search, no good answers found. When coming to a stop with normal breaking, right before I come to a complete stop, the rearend just jumps, and makes this horrible clunking noise. When hard stopping, rarely makes a noise. when accelerating normally, it ocassionally jumps, but not nearly as bad as stopping. Hard accelerating in first and let off before second, sometimes clunks pretty good also. Mostly when stopping though. I am going to have u joints replaced next week. Could it be any thing else though? oh yeah, still has stock 2.73, and car has 95k.
Old Feb 11, 2004 | 04:30 PM
  #2  
StoneRhino's Avatar
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From: Pendleton Or
That sounds like a possibility, but might as well have the cover pulled off to check... that will tell you real fast and easy.
Old Feb 11, 2004 | 04:35 PM
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SVT Killer LV's Avatar
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The first time that happened to me I couned 6 teeth

The second time... 17 teeth, a c-clip, and a 1 split posi
Old Feb 11, 2004 | 04:40 PM
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Aggie7732's Avatar
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From: Magnolia, TX
Actually, I have a related problem just in case someone might know the answer to this as well.

I have an '95 formula automatic, usually if I let off the gas right before it shifts from first to second I get a pretty good clunk. Otherwise it drives fine. Any ideas?

-Sean
Old Feb 11, 2004 | 04:46 PM
  #5  
m_morrison14's Avatar
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From: Charleston, SC
Originally posted by SVT Killer LV
The first time that happened to me I couned 6 teeth

The second time... 17 teeth, a c-clip, and a 1 split posi


Well I just changed the differential fluid about 15k ago and everything looked fine in there. This started about 5k ago, and I did add the limited slip fluid
Old Feb 11, 2004 | 05:20 PM
  #6  
CamaroSS30thAnn's Avatar
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From: NY...what a bad place for a nice car
same thing happen to me...except it only happens when i hit the gas and let of b4 it shifts only happensa every once in a while......anybody out ther have any idea...i would like ot know and sooo would the others....TTT
Old Feb 11, 2004 | 05:23 PM
  #7  
96HealyZ28's Avatar
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I have the same frickin problem. when i hit the gas and let go before it shifts, it clunks, loud sometimes. I look forward to some help with this too.
Old Feb 11, 2004 | 05:31 PM
  #8  
jbird's Avatar
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From: Myrtle Beach, SC
Usually I would think that clunks are caused by u-joints. I don't know the severity of your clunks though, so something in your rearend may have crapped the bed.
Old Feb 11, 2004 | 05:58 PM
  #9  
CamaroSS30thAnn's Avatar
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From: NY...what a bad place for a nice car
Originally posted by jbird
Usually I would think that clunks are caused by u-joints. I don't know the severity of your clunks though, so something in your rearend may have crapped the bed.
well my rear pinion seal is leaking soo could a bad seal make the pinion shaft move a round a bit??? making a clunk b/c the gears are not messhing correctly....couldnt think of the word so i dont know if meshing is the right one lol
Old Feb 11, 2004 | 06:05 PM
  #10  
formula6294's Avatar
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i have it too, in fact lots of people do. its from our cars crappy *** rear!! for all those who hear it be warned!! your rearend will be done in not too far off in the distant future.
Old Feb 11, 2004 | 06:21 PM
  #11  
CamaroSS30thAnn's Avatar
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From: NY...what a bad place for a nice car
well i guess im going to check my gears when i change the seals ......im changing the oil too soo ill update in the future
Old Feb 11, 2004 | 07:00 PM
  #12  
Brundle's Avatar
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From: Whitby, Ontario, Canada
Re: clunk from rearend

Originally posted by m_morrison14
also posted this in drivetrain, any ideas

did a search, no good answers found. When coming to a stop with normal breaking, right before I come to a complete stop, the rearend just jumps, and makes this horrible clunking noise. When hard stopping, rarely makes a noise. when accelerating normally, it ocassionally jumps, but not nearly as bad as stopping. Hard accelerating in first and let off before second, sometimes clunks pretty good also. Mostly when stopping though. I am going to have u joints replaced next week. Could it be any thing else though? oh yeah, still has stock 2.73, and car has 95k.
u describe exactly what happens in my car too. i have already tried several things to solve the prob but nothing helps, however, i found this at a web site:

Q: What's that hallow clunking noise from the rear over bumps?

A: A clunk is most likely the rear springs which are "popping" over bumps. If you have squeak, it's probably caused by the metal springs rubbing against their metal perches. In either case, a Technical Service Bulletin (#B005001) calls for the placement of rubber isolators at the bottom of the springs to act as cushion. You can probably do this yourself by wrapping some rubber hose around the bottom coil (down by the axle) of each spring.

here is the site address:
http://www.f-body.org/oldfaq/html/faq/index.html
you'll have to navigate to that section in the FAQ if u want to see it on the page itself

i was gonna try this and see how it helps when i bring my car out in the spring.
hope this helps u at the current time. if it does. PM me and lemme know
Old Feb 11, 2004 | 07:22 PM
  #13  
ZDriver96's Avatar
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From: Tampa Florida
9 out of 10 says its the 2 torque arm bolts coming loose....

Check and tighten the 2 bolts that hold the torque arm to the rear end.
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