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Vibration/clunking when decelerating

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Old 09-04-2007, 09:51 PM
  #11  
PJB
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Default RE: Vibration/clunking when decelerating

Well they did drive it after working on it so if the problem went away like it seemed to they probably would never have noticed anything weird.
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Old 09-04-2007, 09:55 PM
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mattdel
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Default RE: Vibration/clunking when decelerating

who knows.
if the driveshaft was loose, they woulda known when removing the bolts, and if the ujoints were bad, they wouldn't have replaced them on their own.
who knows.
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Old 09-13-2007, 06:15 PM
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PJB
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Default RE: Vibration/clunking when decelerating

This problem is back with a vengence.
It seems to be getting worse- the whole car bucks when its happening.
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Old 09-13-2007, 06:33 PM
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mattdel
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Default RE: Vibration/clunking when decelerating

check the harmonic balancer?

edit for my ignorance, i forgot its a drivetrain clunk.
i'd be looking for loose control arm bolts, probably the axle mounting spot.
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Old 09-13-2007, 07:44 PM
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AdderMk2
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Default RE: Vibration/clunking when decelerating

sounds to me like you have an internal rear end issue with pinion pre-load or backlash.

unbolt the driveshaft and SLOWLY turn the pinion side to side.... if it has ANY play in it your gonna be looking at a rear end tear down
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Old 09-13-2007, 07:50 PM
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WhiteWindsor
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Default RE: Vibration/clunking when decelerating

ORIGINAL: FASTBLACK

Sounds like it could be the pinion gear. Grab the driveshaft in the rear next to pinion gear and see it there is any play, it could be something as simple as needing to tighten your pinion bolt. After i changed the gears in one of my mustangs it did the same thing. I could push and pull the ds back and forth. When i had pressure on it, like accelerating, i did not notice it, but when i took that pressure off, de-accelerating, the noise would be there.
Did you ever check what i said above?
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Old 09-13-2007, 08:19 PM
  #17  
TTGreenSN95
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Default RE: Vibration/clunking when decelerating

Mine was doing the same thing the rearend bushings were wore slam out and the rear was moving around and when I came to a stop the sway bar would hit the rear end housing clunk clunk ??????
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Old 09-14-2007, 03:38 AM
  #18  
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Default RE: Vibration/clunking when decelerating

ORIGINAL: FASTBLACK

ORIGINAL: FASTBLACK

Sounds like it could be the pinion gear. Grab the driveshaft in the rear next to pinion gear and see it there is any play, it could be something as simple as needing to tighten your pinion bolt. After i changed the gears in one of my mustangs it did the same thing. I could push and pull the ds back and forth. When i had pressure on it, like accelerating, i did not notice it, but when i took that pressure off, de-accelerating, the noise would be there.
Did you ever check what i said above?
Honestly not yet because the problem seemed to have gone away for a bit.
Ill check when I get a chance- Ive been busy lately and havent been able to unbolt the driveshaft, etc.
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Old 09-14-2007, 03:40 AM
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Default RE: Vibration/clunking when decelerating

ORIGINAL: AdderMk2

sounds to me like you have an internal rear end issue with pinion pre-load or backlash.

unbolt the driveshaft and SLOWLY turn the pinion side to side.... if it has ANY play in it your gonna be looking at a rear end tear down
Im starting to doubt the ability of my friend to put gears in the right way. Ill have to check this weekend.
If its screwed up Im buying a good differential and new gears.
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Old 09-14-2007, 07:20 AM
  #20  
blk40th
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Default RE: Vibration/clunking when decelerating

yea i was gonna replace my u joints last night. but i got the car up and turned the driveshaft (the parking brake was on, car in neutral) and it turned maybe 1/4 rotation so im thinkin my gears or carrier are shot. it makes a clicking noise sometimes and it doesnt go posi. i need a rear if anyone has one. i want something built,im gonna look into a strange or dts.
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