Four wheel drive not engaging

2002 FORD F-250

225,000 MILES • 7.3L • V8 • TURBO • 4WD • AUTOMATIC

COLBERT42

MEMBER
1 POST

When I put my truck in four wheel drive and lock the hubs the front wheels do not turn and the back tires just spin. I have changed the fuses and replaced the motor to the switch but it still isn't lighting up or engaging.

Jan 2, 2019 at 3:02 AM

STRAILER

✓ASE Certified Mechanic
54,840 POSTS

Hello,

There are six fuses that need to be checked for power. here is a guide to help us get started with the wiring diagrams so you can see which fuses to test and how the transfer case works. There are also two relays to be tested us well.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Jan 3, 2019 at 10:48 AM