Airframe

I just installed a rough country 6" on my 2007 f150. When I start to drive, as I accelerate, I get a grinding noise coming from the front end. When I release the gas, it stops, then as I acceperate again, it comes back. However if I put the truck in 4X4, the noise goes away completely. When I swith back to 2x4, it starts again. help please.

JoGreat1

I'm not too familiar with the 07's. I have a 2012 and I encountered the same problem. Ended up being a hub actuator.

boomer85

Hub actuator on my 14, transfer case was also replaced at the same time, so it was one of or a combination of both lol

Fbcoach

Could also be the IWE solenoid/vacuum lines. If it stops when you pop it into 4x4, then that could be the issue. I had a smiliar issue with my '06, and it ended up being the solenoid.