Ford shift on the fly - no 4HI
2010 F-360 6,4L My electronic shift on the fly will not engage in 4 HI. It will go into 4 low, comes back out into 2HI just fine, just no 4HI. I can manually lock the hubs and it will work, just not...
Forum Discussion
so the steering does bind up in 4LO?
Has it always done this?
Are you sure locking the hubs is not required?
You can place the hubs in 'auto lock' mode. When using the switch on the dash its supposed to be able to switch into 4 hi or low.
Since it does switch into 4 low my assumption is the vacuum lines are fine - there is only one vacuum line that runs from the pump to the hubs. I would think if there was a leak it would not switch into high or low.
What I mean by 'binding up' is that I know its in 4 low because of the low range when i drive and if I turn the wheels while driving on hard pavement the wheels will 'skip' or bind because I am on dry pavement. So I know 4 low is working fine.
if I switch into 4 high the dash light comes on but I never feel it engage. Also if I drive it slowly and turn the wheel there is no binding. I can turn the wheel the entire way and make a circle no problem. If it was in 4 high I would feel it skip and bind
