Buzzing sound 40mph and up

[TurboRanger]

I noticed I hear a buzzing sound like a old car speedo cable going bad 40 mph and up I hear it in my left ear Sounds like driver side
24 ranger Lariat 4x4

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[Ag3ntC00p3r]

Do you only hear it when stepping on the gas pedal or do you always hear it when above 40?

 

[TurboRanger]

Always it gets louder the faster you go. It seems the faster you go the louder it gets . Not RPM
I think maybe transfer case ?

 

[Texas Ranger]

Always it gets louder the faster you go. It seems the faster you go the louder it gets . Not RPM
I think maybe transfer case ?

My transfer case sounds like it’s winding up fierce when I’m in 4x4 and to a lesser extent AWD but it goes away in 2H completely.

I hope this sheds some light

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