Roaring Noise...ideas?

[knockonwood]

I took it back to the dealer and just left if with them, asked them to just track down the noise and not throw parts at it. Will update if/when I find out anything.

 

[Trainmaster]

If the noise is not speed related, have you ruled out a fan that's not disengaging? It will stay engaged if the truck's low on coolant and sound like a roaring transmission that's not shifting out of second...

 

[knockonwood]

I have not thought of fan engaging.
There is a slight change in the sound that corresponds to speed, just not typical pitch increase. It's a subtle increase of volume and the rhythmic sound gets faster. Also I can hear the fans running distinctly from this noise. That makes me think it's not fan.

 

[JamaicaJoe]

I have a 2wd 1st gen, so a lot wont apply. Recently I had new tires, brakes, rotors, upper control arms, lower ball joints installed. All great/ However at about 30 MPH I had a rumbling sound that was annoying. My gut told me wheel bearing. I took it back to the shop, they told me it was the Michelin Defender tires wearing in, wheel bearings were good. ok... I drove 100 miles, watched a youtube that said to put your hand on the spring to feel low frequency vibes while rotating the wheel in the air. Went back to dealer and asked if that was how they checked. A couple hours later I had a free new wheel bearing.

 

[knockonwood]

Ford dealer just called me and said they can fix it for another $1,800. Transfer case this time

 

[JamaicaJoe]

Are they going to credit you for the $1900 in work, already paid, that did not fix the problem?

 

[GlennSullivan]

Are they going to credit you for the $1900 in work, already paid, that did not fix the problem?

Exactly X2 and Is there a guarantee that this is THE FIX.

 

[knockonwood]

I bet you can guess the answer to both those questions. They did say they would "help me out" because it was so expensive again. Also, the transfer case has a 2 year warranty, so that's something.
Here's hoping this fixes the issue.

 

[Jachniw]

Based on OP's description, my vote is wheel hub assembly (i.e., wheel bearing).
My EXPy has 141K and all 4 have been replaced within the last 40K.

 

[Stephen Dunster]

I had a similar sound in my 2013. I put it in the air and found the rear hub was bad.