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Jeremy, Certified Diesel Technician/Electrician
Category: Ford
Satisfied Customers: 3071
Experience:  ASE, NATEF Engines and Electrical certified, EPA 608/609
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I have a 03 ford f 250 sd 4wd the transfer shift motor

Customer Question

I have a 03 ford f 250 sd 4wd the transfer shift motor locked up and I replaced it and now it will only shift one way it will shift from 2wh to 4wh or 4wh to 4wL but it will not shift back from any possition could it be the switch??
Submitted: 1 year ago.
Category: Ford
Expert:  Jeremy replied 1 year ago.

My name is ***** ***** I will assist you.

Yes, it could be the switch or it could be the relays under the hood. You have one relay to move the shifter one way and another to move the shifter back the other way.

under the hood, there is a box with only 2 relays in it. It should be the relay box on the driver side, as you are standing at the driver steer tire, the box is the small one to your left, closest towards the front. The box itself sits next to the fuse box. You should have one large fuss box and 2 small relay boxes.

Swap those relays with each other and try it again. If it moves, One relay is bad. If not, then look at the switch.

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Customer: replied 1 year ago.
It's a 6.0 liter deisel I have one box on the driver side that has 4 relays and two small fuses two of the relays are the same size the other two are different sizes
Expert:  Jeremy replied 1 year ago.

The small box with same size relays is what to swap.