Driveline Vibration? - Ford Powerstroke Diesel Forum
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Old 01-18-2014, 12:16 PM
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Driveline Vibration?

Ok so I've recently had a vibration develop and I am trying to narrow it down, the vibration starts at 40mph and becomes quite noticeable at just above 50mph then settles down some at 60mph. I've got an ext cab long bed, and I have just had a custom 1 piece driveshaft made because I thought it was that, plus my carrier bearing and front u-joint were pretty shot. I have heard about the ICP or bad injectors possibly being the issue, but it is not rpm dependent, I've dropped down to 4th gear and have the vibration still.

I need help ASAP because its my daily and riding my motorcycle in the 20s and 30s is no good.
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Old 01-21-2014, 12:16 PM
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Have you tried adjusting the carrier bearing bracket?
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Old 01-21-2014, 04:37 PM
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^^^ he's running a one piece drive shaft now. What do your pinion and t case angles look like? Do they match? Are u running any lift? Angles on your one piece shaft?

Have u done a D-60 swap? Checked out your front end for sloppyness. Have u balanced your tires or rotate them to see if the vibration changes or moves?

Sorry for all the questions but just need to know more

Last edited by ol_Blue97; 01-21-2014 at 04:53 PM.
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Old 01-23-2014, 05:35 AM
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The transfer case/axle angles are maybe off by a degree or 2 at most, they're not visibly different, I have done the Dana 60 swap up front and swapped to f350 blocks in the rear along with that. I have eliminated the front end as the problem by taking the rear of the truck off the ground and reaching the same speed and getting the vibration. I pulled the wheels off and still there, pulled the drums to make sure they weren't warped bad or cracked...still there.

Thanks for the replies
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Old 04-15-2014, 07:17 PM
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I know I'm bringing back an old thread but wanted to give input in case someone else comes across this. Ends up my 1 piece driveshaft was built 2" short so it wasn't fully in the slip joint....I had my transfer case rebuilt and replaced the axle(which I got a good deal on a C5 so I'm not too mad about that)
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