School me on ESOF

VanoFord · Jan 6, 2013

Ok so I'm a noob when it comes to Elec Shift On Fly. I was reading in the manual that the hub should say 'Auto/Lock' from the picture in said manual. My truck however is not marked. In the manual it depicts 'Auto' as being below FORD and 'Lock' above FORD. Can anyone confirm or deny this?

When I took my truck out to the beach the front hubs would not engage unless I flipped them to lock. I was however already stuck when I tried to flip into 4hi/4lo. But once I flipped them front hubs worked. Thanks!

POWER-STRUCK · Jan 6, 2013

it may have had the hubs replaced with manual units, it takes 11-13" of vacuum to engage them and 5-7" to disengage

Big Angry Hillbilly · Jan 6, 2013

Also you may have a vacuum leak, weak vacuum pump, the PVH solenoid might be no good, etc.

VanoFord · Jan 6, 2013

I'm leaning towards not having auto hubs as the auto hubs on eBay do say Auto. Guess next question is how hard/easy of a swap is this if I wanted to put in Auto's. Thanks!

Big Angry Hillbilly · Jan 7, 2013

Three machine screws on each side.

Lassie · Jan 10, 2013

When you change to auto, you'll probably have to fix the problem that caused the guy before you to go to manual! Knuckle seals, hub seals, pvh solenoid, vaccuum line leaks.......one or more of em. Not too hard though.

VanoFord · Jan 11, 2013

Lassie said:
When you change to auto, you'll probably have to fix the problem that caused the guy before you to go to manual! Knuckle seals, hub seals, pvh solenoid, vaccuum line leaks.......one or more of em. Not too hard though.

i didnt even think about what made him go to manual might still be an issue on the truck. guess i need to get a haynes and start checkin out all these issues. thanks for the heads up!