dc

Transfer case is torn down. Syncro broken.

Synco in tranfer-case broke.

I'm on the road for another full week. Truck will engage 4x4 when hubs are locked in. Will not engage in auto unless truck is stopped. Did have time to vacuum test each hub independently. Both hubs held vacuum. The truck did have a code for bad motor on transfer case. This was changed twice. The last change per hotline. I have scheduled a couple of days for repairs next week.

I've looked at switch and connector, nothing obvious. It engages every time with hubs on manual or stopped with hubs in auto.

This is my personal truck. (2007 F350 diesel ESOF) Would not engage 4x4, no 4X4 light, with or without hubs engaged. Was away at meetings and dealer installed new motor. Worked sometime and then not. Hotline said try another motor and 4X4 module. Truck will now engage 4X4 when hubs are engaged or when truck is stopped. Will not engage when moveing with hubs in auto. Dealer insists hubs not at fault because 4X4 dash light is not on. What else could it be.