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  #1  
Old 10-09-2012, 05:04 AM
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New problem with my truck....

Well kinda new, it's been going on for a few months.
It has a buzzing vibration at about 60mph, it dosnt really do it under acceleration or when let all the way off the pedal, it's worst right in that sweet spot.
I can also feel it under hard acceleration from a dead stop.

I have replaced the u-joints in the rear section of the driveshaft and the swing bearing, none of witch seemed bad.

Oh, truck is a
03 dually
Crew cab
Long bed
2wd
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Old 10-09-2012, 05:33 AM
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I'm just gonna throw something out there, is it a droning sound, or is it something you feel significantly? Loose turbo mounting bolts can apparently cause a hideous droning/vibration sound. Maybe i'm in left field?

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Old 10-09-2012, 05:40 AM
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It has a bit of harmonic drone to it, you can hear it making the bed buzz and vibrate

I just had the turbo off doing studs, the vibration was there before and after.
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Old 10-09-2012, 05:43 AM
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There is a tsb on that for a bracket update I believe. Other than that I would say it's your exhaust system rubbing or out of alignment during torque.

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Old 10-09-2012, 06:14 AM
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Do you know what bracket?
With my side pipes all the exhaust Is mounted solid to the frame, only part that has any flex or movement is the down pipe.
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Old 10-09-2012, 06:16 AM
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It really feels like a driveshaft issue, but I don't know what would make it start all the sudden. I guess I'll have to pull the whole thing out and take it to the drive shaft shop.
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Old 10-09-2012, 07:00 AM
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You may also want to check your tires tread for a chunk of tread missing; like a piece gouged out. Can make a heack of a droneing noise at road speeds especially on a dually.
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Old 10-09-2012, 08:20 AM
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Not sure if this is your problem, TSB 04-18-4. I can't attach it.

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Old 10-09-2012, 08:30 AM
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From the looks of the tsb, it dosnt apply to my truck. It's an early 03 with the different pedestal and ten vein.

It's a pretty serious vibration, I can feel it in the floor, pedals and seat.
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  #10  
Old 10-09-2012, 08:36 AM
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Ok, like you said, you won't know if it's your drive line until you pull it out. Keep us updated.

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