Vibration during deceleration. - Ford Powerstroke Diesel Forum
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Old 06-17-2012, 06:27 AM
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Vibration during deceleration.

When I let off the gas, I have a vibration like I'm running over rumble strips. Nothing on acceleration. Guessing carrier bearing. There is no play in the ujoints, it is Definatley rear and not front. Any ideas?


Wishin I was fishin.
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Old 06-17-2012, 07:12 AM
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are you hitting your brakes?

and check your driveshaft and make sure the balancing weights didn't come off
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Old 06-17-2012, 07:16 AM
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and also go under your truck and see if you can wiggle your driveshaft and see if theres any play, its most likely your U joints

if there is see if you can grease them if that doesnt help you will need to replace them
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Old 06-17-2012, 07:17 AM
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new issue ?
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Old 06-17-2012, 12:38 PM
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It's a relatively new issue. It happens whether braking or not. The driveshaft is solid, there is no u joint play. Everything is pointing to the carrier bearing as the seal looks pretty worn. There are no lube points on any of the joints which is one thing I hate about stock parts. I've got an appointment with the dealer Wednesday. I'll let them deal with it. It's under the extended warranty so he says he is just gonna order new driveshafts. He thinks that if it's that worn, it's safer and easier to swap driveshaft and this way there are no balancing issues. He says he has seen driveshafts out of round due to the carrier bearings and he remembered last time that the joints and shafts looked original. He figures he will do it all do I don't have to come back with another deductible in a few months. I'm quite alright with that. I'll keep everyone posted.


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