I am having troubles with my 4x4. I flip the switch from 2 high to 4 aws or 4high or 4 low and the gauge on the dash lights up and shows that it accepted it. However, it doesn't engage. I replaced the transfer case a year ago and at that time, it was working.

Is the motor not engaging? I checked the fuses in the fuse block and they look good.

What else could it be?

 

oops, forgot to say that it is a 98 expedition 4.6 liter.

 

4X4 was not engaging on my '98 Expedition with the 5.4 L......this forum spoke of high failure rate of the dash board switch....so I changed that out ($40.00). That wasn't it. The next item this forum spoke of high failure rates was the transfer case motor. I replaced that..........and I was back in business! Ford dealers want $320.00 for a motor. Advance Auto sales remanufactured units for $150.00. They have a one year warranty.