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Question about driveline vibration/oscillation.??!!??? 120-130

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posted by  patrick of montreal on  Mon Jul 4 15:22 CST 2011
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last visit: Sat Oct 18 08:25 CST 2014
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Today on the highway I started getting what felt like the beginning of driveline support bushing failure.
Actually felt like a flat tire but wasn't.....anyhow I checked everything out, U joints feel tight, suspension bushing feel good, support bushing seems fine could be stiffer but seems to be locating the prop shaft jsut fine....so my question.
What gives? The vibration is speed variable happens in neutral coasting as well as under load but doesn't happen in either situation all the time. I accelerated hard up a steep hill, and if it was the support bushing or u joints I would expect whapaty whapaty whap...but it pulled fine. Then after I turned the corner to get home I coasted up the street at 15-20 mph and and it was quite strong (it is really seen through the shift lever . Any ideas....I'm a little flummoxed.
--
Patrick, '68 220 (used to drive 240s)






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