3rd Gen Engine and Drivetrain -> 2007 and up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Deceleration Noise and Vibration

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Old 08-15-2012, 12:51 PM
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Deceleration Noise and Vibration

Started getting a noticeable increase in what appears to be exhaust brake drone and some vibration as truck comes to a stop. Truck runs OK and the noise and vibration only occurs when decelerating.
I removed the EGR crossover tube and it was clean , also just had the EGR valve pulled and cleaned , and while it might be a bit better the problem is still there. There are no codes , not even in memory.
Anyone had similar problem? Truck is scheduled into the dealer Friday but I'm not looking forward to it.
Old 08-15-2012, 03:18 PM
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Possibly a bad u-joint?? I know my '03 would shake the dash while coming to a stop...all 3 rear joints were completely locked up with less than 30k miles on them. Not sure if the newer trucks are still having u-joint issues or not.
Old 08-15-2012, 04:01 PM
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I did think maybe U- joints but that's not it. Thanks.
I'm thinking problem with exhaust brake or maybe turbo causing a back pressure.
Old 08-17-2012, 09:24 AM
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Turns out the problem was a bad rear driveshaft, would not have thought that would go bad in 86m miles.
Old 08-17-2012, 01:14 PM
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The driveshaft? In what way did it go bad?
Old 08-17-2012, 02:42 PM
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Sorry, rear driveshaft uni joint.
Old 08-17-2012, 07:59 PM
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Glad you got it fixed!!
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