Truck has tinnitus

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kaldridge

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Upper Peninsula, Michigan
Ram Year
2016
Engine
Cummins 6.7
Hello everyone. Ive ran into an issue i cant figure out and figured i ask about an ongoing annoyance.

2016 Ram 3500 dually. Cummins 6.7. 103k miles.

Bought the truck used in 17 put 60k miles on it.

A couple days ago I thought my tinnitus was kicking up past my hearing aides while driving. My oldest son(10) asked what the noise was. He was in the rear passenger. He described it as a horror movie stabby sound eeee eeee eeee. I did a couple different speed tests and noticed that the sound only happens at 70ish. If I set cruise at 70 ilthe sound is permanent eeeeeeee. What are some causes or is this something I just have to accept?
 

crash68

ACME product engineer
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If the sound is speed related it's most likely transmission or driveline related. Usually noise related to the engine will follow rpm not the vehicle speed.
Try forcing a downshift when the speed happens, might give a clue on how or if the sound changes.
 
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kaldridge

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Upper Peninsula, Michigan
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Cummins 6.7
It sounds like it's coming from the front drivers side. But that could be because I'm driving. I will say it's coming from the front of the truck.

As far as something caught in the brakes. Wouldn't that make a permanent sound not just at 70.

My door seals leak at 80 :D

Ima pull tires and check bearings, brakes, rotors, and bushings today.
 

star_deceiver

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Airdrie, Alberta
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2021
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3.6 Pentastar
Had than in my ‘16 Cummins…. Started as a faint eeee eeee… got worse… about 3 days later it turned into a driveline rumble. The u-joint at the rear axle started to fall apart. This was how I found it as you can’t find a bad u-joint when the driveline is bound up. IMG_0905.jpeg
 
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kaldridge

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Upper Peninsula, Michigan
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Cummins 6.7
Well that was a productive day. Front end torn apart and put back together all lubed and greased and antiseized. Road tested and still got the sound at 70. Ima check driveline and U-Joints tomorrow.
 
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