98 Expedition 5.4L 4X4 - 250k miles
I am having troubles figuring out where a new noise is coming from on my vehicle. It is a slight, low growling/grinding noise. It almost sounds like road noise, but it is not consistent under all driving conditions.
It starts at speeds above 40 MPH and increases in volume and intensity as speed increase. It does not change with RPM. It increases in intensity with slight right pressure on the steering wheel, either just adding pressure to the steering wheel or in right banking turns. The sound goes away in left bank turns or with slight left pressure on the steering wheel.
There is a very slight vibration that gets slightly worse at highway speeds and right bank turns.
Front suspension checks out O.K, no bearing play or ball joint wear. (I just replaced front passenger upper control arm to solve one ball joint problem, also replaced passenger CV Axle).
There does appear to be a little play in the driver side shaft that comes out of the front differential. Not sure if that is normal. Never changed or checked fluid in front differential and no signs of leaks.
Rear bearings, fluid and seals replaced last year with OEM.
A little more brake dust on driver side than on passenger side. Front pads, rotors and passenger hose replaced February last year.
Anyone have any ideas of what I can check out, rather than just wait for it to get worse?
I am having troubles figuring out where a new noise is coming from on my vehicle. It is a slight, low growling/grinding noise. It almost sounds like road noise, but it is not consistent under all driving conditions.
It starts at speeds above 40 MPH and increases in volume and intensity as speed increase. It does not change with RPM. It increases in intensity with slight right pressure on the steering wheel, either just adding pressure to the steering wheel or in right banking turns. The sound goes away in left bank turns or with slight left pressure on the steering wheel.
There is a very slight vibration that gets slightly worse at highway speeds and right bank turns.
Front suspension checks out O.K, no bearing play or ball joint wear. (I just replaced front passenger upper control arm to solve one ball joint problem, also replaced passenger CV Axle).
There does appear to be a little play in the driver side shaft that comes out of the front differential. Not sure if that is normal. Never changed or checked fluid in front differential and no signs of leaks.
Rear bearings, fluid and seals replaced last year with OEM.
A little more brake dust on driver side than on passenger side. Front pads, rotors and passenger hose replaced February last year.
Anyone have any ideas of what I can check out, rather than just wait for it to get worse?
Last edited: