Hey all! Anyone have an idea on this sound? I found a heat shield that was loose from rust. Took it off and still hear it. It’s only when I’m moving about 10mph and above. The engine seems fine. Any help would be awesome.

oh 2009 F150 v8 5.4

 

Check your lug nuts, making sure they’re all tight
or
driveshaft for something rubbing against it

thats all I’ve got other than a wheel bearing

 

Thank you! I’ll have a look.

 

While your under there look all over, sounds like something is loose somewhere.

 

Update

i put it into 4H and it went away. I put it back into 2 wheel and it didn’t make a sound except once when I took a left turn.

 

Sticking it in 4H is a troubleshooting step. Tells me you may have a vacuum leak/bad IWE. Pull the power to your solenoid for a day or two and see if the noise comes back. Pulling the power will engage your IWEs, but unless you stick it in 4H/4L, you can drive like that 'til the cows come home. That's assuming you have cows.