Weird Vibration
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Cross-Country
Joined: Dec 2021
Posts: 64
Likes: 52
Weird Vibration
I have a vibration in my 22 f350 dually that I can’t figure out where it’s coming from.
It starts to be noticed when I get above 72 mph. It starts kinda soft and works its way up to a very noticeable shake then stops and starts all over again. It is a constant cycle that does not stop. My father in law and I went on a 2hr road-trip and it did it the whole time. It is only felt in the seats and floorboard. Can not be felt in the steering wheel or anything to do with the front end.
I have had my tires balanced by 3 different shops and hasn’t changed. It does it empty, pulling a trailer and even pulling my 5th wheel.
im stumped.. any suggestions??
It starts to be noticed when I get above 72 mph. It starts kinda soft and works its way up to a very noticeable shake then stops and starts all over again. It is a constant cycle that does not stop. My father in law and I went on a 2hr road-trip and it did it the whole time. It is only felt in the seats and floorboard. Can not be felt in the steering wheel or anything to do with the front end.
I have had my tires balanced by 3 different shops and hasn’t changed. It does it empty, pulling a trailer and even pulling my 5th wheel.
im stumped.. any suggestions??
Cargo Master
Joined: Feb 2017
Posts: 2,418
Likes: 720
From: Wisconsin
This is what happened to mine and I'm in the process of removing the shaft and having it balanced while I wait. I noticed the small rust spot on the driveshaft tube last time I was under the truck and sure enough................ missing weight disc and small vibs at 70 mph plus
Thread Starter
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Cross-Country
Joined: Dec 2021
Posts: 64
Likes: 52
This is what happened to mine and I'm in the process of removing the shaft and having it balanced while I wait. I noticed the small rust spot on the driveshaft tube last time I was under the truck and sure enough................ missing weight disc and small vibs at 70 mph plus
I will take a look at mine.
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Fleet Mechanic
Joined: Apr 2015
Posts: 1,641
Likes: 507
From: Phelan CA
When you have a pulsing vibration, that means you have at least two complementary excitation sources.
Does this occur on strait roads? Are all tires inflated and worn evenly?
Diagnosing these types of complementary vibrations is difficult with a scope, because you can get a false Hz reading.
My guess is two or more tires, or drive line u joints
Does this occur on strait roads? Are all tires inflated and worn evenly?
Diagnosing these types of complementary vibrations is difficult with a scope, because you can get a false Hz reading.
My guess is two or more tires, or drive line u joints
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