rear differential

[1999 powerstroke 7.3]

I have a 99 f-250 superduty i assume both rear wheels are suppose to engage but i noticed that only the passenger rear only works anyone know the problem?

[timmyboy76]

its a float'n rearend, the way i interpret. Depending on which way the vehicle turns, is where the power is put to the r/w.

[kinnisoj]

After time the clutches in the limited slip system wear out. If the truck is worked at all or if you live in a area that gets snow the factory limited slip dosnt take long to wear out. Even today new rearend dont take long until you have the old one tire on fire burn out.
I would assume that unless you have changed out the diff fld that it is probably factory issue stuff. Rear/front diff suffer from the out of site out of mind problem....
ARB lockers are way cool and work great...
Oh yea and welcome to the site!