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tranny probs 

 

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 Post subject: tranny probs
Posted: Sat Mar 06, 2010 6:16 pm 
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i just got my auto rebuilt and noticed a slight shake at 1000rpm and at 110km there is a seriouse vibration. it was a full rebuild. any thoughts?
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 Post subject: Re: tranny probs
Posted: Sat Mar 06, 2010 6:43 pm 
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Transmission mount / bolts might not be fully tightened? It's happened to me in my previous Ford and after tightening up the mounting bolts, the vibration stopped.

 

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 Post subject: Re: tranny probs
Posted: Sat Mar 06, 2010 9:47 pm 
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Driveshaft may not have gone back on the exact same way either.

 

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 Post subject: Re: tranny probs
Posted: Tue Mar 09, 2010 9:05 am 
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{USERNAME} wrote:
Driveshaft may not have gone back on the exact same way either.


Shouldn't matter if the shaft is balanced properly. Have you bolted the the vibration dampener back onto the rear of the tail housing? The thing beside the trans mount.

 

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 Post subject: Re: tranny probs
Posted: Tue Mar 09, 2010 7:34 pm 
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Was the torque converter rebuilt?
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 Post subject: Re: tranny probs
Posted: Tue Mar 09, 2010 8:38 pm 
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How about the yokes on the tail shaft?
I had vibration as mentioned above 100 until the yokes were replaced.

 

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 Post subject: Re: tranny probs
Posted: Tue Mar 09, 2010 8:59 pm 
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i believe the converter was rebuilt and balanced.it couldnt be the tail shaft cos theres a slight shake that wasnt there before at 1000rpm when its in park
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 Post subject: Re: tranny probs
Posted: Fri Mar 12, 2010 12:37 pm 
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Are the torque converter bolts tight??? Are the O2 sensors re-connected??? Are the engine mounts OK ( engine twisted to remove tranny ).?????
What model are we talking about here????

 

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 Post subject: Re: tranny probs
Posted: Fri Mar 12, 2010 1:25 pm 
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{USERNAME} wrote:
Driveshaft may not have gone back on the exact same way either.


This shouldn't matter, but sometimes it does. Ford guys always say to mark the diff and shaft flanges, so they go back on in the same place. Sounds odd, but it does happen. Maybe you should undo the 4 tailshaft bolts, spin the shaft 180 deg, and bolt it back up. Go for a fang and see what happens. You might be lucky.
Also, while your under there, check all the crossmember, bellhousing, etc bolts are tight, and check the tailshaft for dents/bumps, and check the unis for play or damage. If they dropped you tailshaft, it could be the problem.
Good luck. :D

 

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 Post subject: Re: tranny probs
Posted: Fri Mar 12, 2010 3:17 pm 
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Thing is, it's vibrating in park so it can't have anything to do with the tailshaft.
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 Post subject: Re: tranny probs
Posted: Fri Mar 12, 2010 6:01 pm 
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Check convertor bolts make sure the trany has been mounted properly. Check the balancer on front of engine possiblity that it may be shagged..
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 Post subject: Re: tranny probs
Posted: Fri Mar 12, 2010 6:11 pm 
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{USERNAME} wrote:
{USERNAME} wrote:
Driveshaft may not have gone back on the exact same way either.


Shouldn't matter if the shaft is balanced properly. Have you bolted the the vibration dampener back onto the rear of the tail housing? The thing beside the trans mount.


I may be wrong but I thought it did matter. On the driveshafts at the diff end Ford from factory put yellow paint on both the driveshaft and the diff to indicate which position it should be in. It's not related, but the harmonic balancer had similar symptoms for me.

 

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