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Australian Falcons Discuss the australian born and bred models here. Includes the 80's 90's and present day Falcons offered by Ford Oz.

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Old 03-24-2009, 07:01   #1 (permalink)
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mad major vibrations

hi everyone, i own an ed xr6 falcon and i have just done a manual conversion and now the car vibrates, only very slightly untill i get to about 120 then it vibrates a bit then it goes away untill about 160 where it vibrates that bad that i almost missed 5th gear,i have checked the diff and all is fine and the whels have been balanced, can anyone help as it is reali bugging me?
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Old 03-27-2009, 02:24   #2 (permalink)
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Re: major vibrations

Did You Get The Tailshaft Ballanced ?
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Old 03-27-2009, 20:52   #3 (permalink)
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Re: major vibrations

Sounds like a driveshaft issue. Perhaps it needs balancing as gl351xd suggests or maybe there is a different angle that has been put on the unirversal joints now that you have changed to a manual. Check the universal joints for wear as well perhaps they are the problem.

Is it the same driveshaft or one you got with the manual trans. Make sure it is a good fit in the tailshaft housing bush and not loose there.

Don't test fate by going fast with it vibrating as it might fly to bits or break the tailshaft housing and all hell can happen at speed from this. You don't want a driveshaft flapping wildly around under your car at 160.
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Old 03-28-2009, 16:41   #4 (permalink)
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Re: major vibrations

If you had the unie yoke changed on the tail shaft or changed the universals and not put the yoke back on the same way that will cause a vibration cause the shaft is balanced as a complete unit . Cheers Ken
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Old 03-30-2009, 07:39   #5 (permalink)
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Wink Re: major vibrations

Definitely sounds like a driveshaft problem to me. First check to see if the shaft is in phase, check u-joints for any slop, etc. If everything else checks out, you probably want to have your shaft balanced.
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Old 04-17-2009, 04:15   #6 (permalink)
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Re: major vibrations

It might not be the drive shaft at all.

I had a similar issue with a customers car when he changed from a auto to a manual.

It turned out the clutch pressure plate had some threaded bolts.
Solution new Flywheel and clutch kit
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