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Vibration at 40 mph?

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Old Aug 19, 2006 | 01:51 PM
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Smile Vibration at 40 mph?

I have a 1997 Ford f-250 7.3 diesel short bed. I use it for hauling my 5th wheel mostly. I get a vibration at about 41mph and it stays until you get to 45 mph.The transmission is fairly new and the tires are 1 year old. Anyone have a idea what could cause this? Thanks for your time.
 
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Old Aug 19, 2006 | 05:17 PM
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Welcome to FTE. Every time I've had to deal with a vibration at a certain speed it has ended up being the u-joints in the rear axle.
 
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Old Aug 20, 2006 | 03:06 PM
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Hi, is the vibration different loaded or empty?
 
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Old Aug 20, 2006 | 09:57 PM
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Originally Posted by cookie88
Welcome to FTE. Every time I've had to deal with a vibration at a certain speed it has ended up being the u-joints in the rear axle.
Never heard of U-joints in the rear axle. Do you mean in the rear driveshaft?
 
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Old Aug 20, 2006 | 11:23 PM
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My buddy had the same problem. He had the u-joints and the carrier bearing changed and it is gone.
 
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Old Aug 21, 2006 | 08:31 PM
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Originally Posted by Apache
Never heard of U-joints in the rear axle. Do you mean in the rear driveshaft?
Of course that's what I meant. Thank you you pointing out my brain fart.
 
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Old Aug 25, 2006 | 03:06 PM
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Had the exact same problem with '05 PSD S/D, S/C long bed. Dealer finally replaced the entire drive shaft assembly, including U-joints. Problem solved. Thankfully it was a warranty job or it would have been "big bucks!"
 
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