Ok I have a 2011 ford expedition that I purchased 2 weeks ago. 4x4 xl with 5.4. 140k.
Purchased it from a private party. It has had a growling humming noise in the front end sounds like it is coming from the drivers side.
Here is what I have done so far. New rotors pads and new front hubs on both sides. Still have the noise. So today I replaced caliper on drivers side. As I had more brake dust on left side. But that is most likely because during my first test drive I accidentally had the pads swapped. With the pads with the ears on the outside. I only drove it a couple of miles and then put them in the correct way. Also 4*4 is working fine. Iwe engage when truck is off and vacuum is off obviously. Hubs actuator are locked in. When I start the truck they release like the are supposed to and the CV do not turn. When I put it in 4x4 it works like it should. I am really dumbfounded. No change in noise that I can tell whether it is in 4*4 or not. This is my first Ford and I am getting pretty frustrated... Please help. I think my next step is to get it on a lift somewhere where I can listen. Others have stated that it can be a rear wheel bearing but it really sounds like it is coming from the front. Ideas please
Purchased it from a private party. It has had a growling humming noise in the front end sounds like it is coming from the drivers side.
Here is what I have done so far. New rotors pads and new front hubs on both sides. Still have the noise. So today I replaced caliper on drivers side. As I had more brake dust on left side. But that is most likely because during my first test drive I accidentally had the pads swapped. With the pads with the ears on the outside. I only drove it a couple of miles and then put them in the correct way. Also 4*4 is working fine. Iwe engage when truck is off and vacuum is off obviously. Hubs actuator are locked in. When I start the truck they release like the are supposed to and the CV do not turn. When I put it in 4x4 it works like it should. I am really dumbfounded. No change in noise that I can tell whether it is in 4*4 or not. This is my first Ford and I am getting pretty frustrated... Please help. I think my next step is to get it on a lift somewhere where I can listen. Others have stated that it can be a rear wheel bearing but it really sounds like it is coming from the front. Ideas please