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diff making clunking noise when changing from R to D 

 

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 Post subject: diff making clunking noise when changing from R to D
Posted: Thu Aug 30, 2007 7:08 pm 
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Age: 32

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Ride: EA Fairmont Ghia

Location: Knox
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hi guys, my EA Fairmont is f@#ked

i need help on what the problem is, takin to mechanic, he replaced the diff due to the spider gears being of centre, we replaced it with a LSD from FTG wreckers and it is still havin problems,

driving doesnt make a noise its only when you change from R to D on the trans that the diff makes the noise

plz post of you have had the same problem or suggestion
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Posted: Thu Aug 30, 2007 7:42 pm 
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mate not much you can do about it,,you have to realize that the output shaft is going from being forced in one direction to another,so there is going to be a noise somewhere in the drive train.

as the pinion is the only part that allows excess movement it will make a noise.

get used to it as all the cars I've owned have done it.

 

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Posted: Thu Aug 30, 2007 8:10 pm 
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Yeah its the lash in the diff. The BA onwards have a flex coupling on the driveshaft to absorb this lash but its not compatible with a single peice driveshaft.[/b]
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Posted: Sun Sep 02, 2007 6:08 pm 
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turn your stereo up so you can't hear anything. problem solved!

 

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Posted: Mon Sep 03, 2007 11:00 am 
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Have you thought about checking the Uni-Joints?

 

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Posted: Mon Sep 03, 2007 2:13 pm 
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also check upper and lower control arms when these go they allow rotation of the diff which can cause this noise.
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Posted: Mon Sep 03, 2007 2:53 pm 
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DSTRBD wrote:
Have you thought about checking the Uni-Joints?


If UJ's were to clunk betweed D & R the car would be undrivable due to severe vibrations in the driveline.
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Posted: Mon Sep 03, 2007 7:33 pm 
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Location: Knox
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yeh i have checked the uni joints their fine, that was first look when i got the car back, i havent checked the control arms, i will deffinatly have a look at them and get back to you
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Posted: Mon Sep 03, 2007 8:05 pm 
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i meant control arm bushes not the actual arms just to clear it up
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Posted: Mon Sep 03, 2007 8:15 pm 
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Welcome to a falcon diff. They do that.

 

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