Help with rear axle rubbing grinding noise 2011 supercrew
05-16-2016, 10:43 PM
#1
Junior Member
Thread Starter
Help with rear axle rubbing grinding noise 2011 supercrew
2011 F150 Supercrew, 3.7L, shortbed, 125,000 miles.
Rub Rub Rub sound in the back sounded like noisy diff.
Picked it up on the lift no noise. Going down the road it's a rythmic rub ... or chun, chun, chun... with the wheel speed. More noticeable when coasting at lower speeds.
Changed the diff fluid and added friction modifier. Slight improvement? Maybe.
Now 5000 miles later and the noise is getting louder.
Pulled the rear axles and found the R. axle bearing slipping while the axle spun.
Replaced both rear axle bearings.
No change...
Could it be the axles?
The brakes and rotors look great however there is a slight ripple pattern on the front edges of the parking brake like someone ran it with the parking brake on.
Please help me stop throwing money at this back end.
Rub Rub Rub sound in the back sounded like noisy diff.
Picked it up on the lift no noise. Going down the road it's a rythmic rub ... or chun, chun, chun... with the wheel speed. More noticeable when coasting at lower speeds.
Changed the diff fluid and added friction modifier. Slight improvement? Maybe.
Now 5000 miles later and the noise is getting louder.
Pulled the rear axles and found the R. axle bearing slipping while the axle spun.
Replaced both rear axle bearings.
No change...
Could it be the axles?
The brakes and rotors look great however there is a slight ripple pattern on the front edges of the parking brake like someone ran it with the parking brake on.
Please help me stop throwing money at this back end.
