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  #1  
Old 09-16-2006, 10:18 AM
drivfour drivfour is offline
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Location: evergreen, CO
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severe vibration-need help

I finally installed the 1996 legacy 4eat with converted #2 speed sensor, converted rear(put 96 rear gear on original limited slip gear set). the speedometer reads correctly and I do not have error codes.
The transmission does not seem to perform right. I am trying to figure out what is not working exactly but here is what I have founfd so far

Terrible vibration at 35-40 mph especially when power is applied- not coasting

shifting from D to 3, there is no difference- seems like overdrive is not engaged

I seem to remember car would free wheel if power was off- does not feel the same
on a slight hill car does not roll back ward at idle


I am looking for help in isolating these issues- I do not want to give up on the automatic

Thanks for help
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  #2  
Old 09-17-2006, 04:26 PM
drivfour drivfour is offline
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I tested today and found out that the vibration- very loud drumming, is right at 42 mph- louder with slight power on quiter if neutral pwer- does not mater in 3rd OD or neutral. Nor other speeds up to 70 mph had a peak in vibration. Any thoughts???
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  #3  
Old 09-18-2006, 01:39 PM
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Earthworm Earthworm is offline
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How are all the joints on the driveshaft?
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Old 09-18-2006, 11:13 PM
drivfour drivfour is offline
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They were stiff but moveable. What level of movement typically causes vibration-for example the joint falls down under it's own weight etc?
Also, if drive shaft and flanges were marked for orientation, how were they marked from factory?
Thanks
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  #5  
Old 09-24-2006, 11:42 PM
drivfour drivfour is offline
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drive vibration problem solved

I changed three things
put in fourth drive flange bolt that I forgot to install
put pb then oil in the slightly stiff u joint
matched paint marks on driveshaft and rear flange

vibration at 43 mph gone- quiet and smooth thruout.
Not sure which of the above fixed problem but it is a dramatic improvement.
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