Truck has tinnitus

[kaldridge]

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]

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.

 

[HuskerRam]

Bearing or something caught between brake pad and caliper?

 

[Travelin Ram]

May be an air leak around a door seal or turbulence, also. I’ve had whistles from mirrors etc.

 

[18CrewDually]

Where's it coming from? Engine bay at high speeds (UNDER LOAD) could be a boost leak from a coupling.

 

[kaldridge]

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

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

 

[star_deceiver]

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.

 

[Jeepwalker]

Fuel pump?

 

[kaldridge]

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.