You can hear the noise in the video. Truck is a 22 4x4. Noise starts after truck warms up. Loudest around 25 mph but can be heard faster or slower. Coasting, light throttle, or light braking have no impact.

Tires have been rotated and balanced. The dealer first thought the noise was a turbo actuator and wastegate so that was replaced…. After that didn’t work they replaced both front wheel bearings. Noise still present. Any ideas?

 

Check the spinning bits: belt tensioners, idler pulleys, ac compressor, power steering... Does it change with rpm?

You can do that with it running and the hood up. Just be careful.

 

Almost sounds like a cam phaser with my airpods in. Really hard to tell. Many dealerships have a VCMM and chassis ear which is are fancy automotive stethoscopes to connect to specific designated places on the frame and engine bay to monitor and quickly correctly identify sounds and vibrations. It would be quicker than having forum members guess at it.

Personally, I'd go the cheap route and poke a long screwdriver around in the engine bay first while the thing is running.

 

no change with RPM. You can manually shift to lower gears and the noise will stay constant

 

the service ticket said they used chassis ears to listen. The dealer is working with me but being without a vehicle for a day each time they diagnose and then again when they attempt a fix is getting old.

I also had discount tire drive and listen to cancel out possible tire noise. In their opinion and Fords’s it’s not tire noise.

 

Can you post a video from under the truck or from the engine bay of when it happens?
What engine do you have?

 

I’ll try and get an old go pro under there. Once the noise starts switching between 2wd and 4wd has no effect. Acceleration or braking doesn’t matter. Hitting bumps doesn’t matter. Just went on a drive and it sounds like it might go away with a left steering input but I’m not 100% on that

 

Does the truck have to be rolling for the noise to happen ? What speeds does it start/end at?
Can you reproduce it standing still?

I'm wondering if it's a body panel or other part resonating/vibrating.

Did they put it in gear and spin the drivetrain on a lift?

Pinion, front end bearing perhaps. (Yes, we're guessing here, but that's life. &#128556

 

You have to be rolling. back at the dealer now. Techs agree the noise is still there. They are checking for simple things like the brake dust shield before tearing into it deeper. I’ll let you know.

 

Wrong forum, sorry.