I have a 94 f 150 with push button 4x4. I push the button and hear a click under the dash but no 4x4. Got any ideas where to start looking?? thanks

 

Auto or manual hubs?

 

I recently posted a question about my 4x4 not engaging. Well i got under and took a look, to my sursprise it looks like an animal has tore the plastic wire management cover off and has chewed the wires. I hooked them back up and everything works just find,,,strange but true