4 Wheel Drive problem

[Kyle04F250]

I have an 2000 F250 6.0L and you have to get out of the truck to lock in the hubs to be in 4x4 mode. For some reason they are not engauging. I thought that the 4x4 could be locked in either in manual or locking the hubs mode. It may be a vauccum problem, but I am not sure and any help would be greatly appreciated.

[Kyle04F250]

Sorry, I have a 2004 F250 6.0L also and it is doing the same thing. The 2000 is a 7.3L.

[jmartinez]

04 f-250 6.0 I move my selector inside the vehicle the 4x4 will illuminate but nothing and when i turn on 4 low the light for 4 low will not come on but when i get out of the truck and manually turn the hubs the 4 wheel drive works fine if anyone has suggestions please help i noticed one of my vacume hoses by the hub seems to be a little dry rotted if i pinch obove the dry rot if it will help engage

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Last edited by jmartinez : 01-24-2008 at 03:52 PM. Reason: need urgent help

[Rob]

definately check the vacuum lines. they may be cracked or something. it may be your vacuum also. hopefully a tech will chime in and give a little more info on this.