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Discussion Starter #1
2002 f250 4x4 will not engage. The 4x4 light on the dash does not come on either. I have checked the switch on the dash with another switch and that didn't fix the problem. With the key on and turn the switch on the dash, you can not hear the 4x4 make a noise to engage. Where should I go from here??
 

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Administrator
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check fuses and relays
don't check your hubs or vacuum system even if it's suggested
you need to sort the transfer case motor / signal /power issue first
 

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I had this problem a while back. I unplugged the harness from the transfer case, blow it out real good and plugged it back in tight. Worked like a charm.
 

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Jackleg Mechanic
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If the 4x4 light on the dash cycles when you turn the key on then you may have a bad relay, located in in a small box beside the left battery. That's where I start looking. Provided of course all related fuses are confirmed good.
 

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I'm having the same issue 04 f250 Light does not come on when using the dash 4x4 switch or turn the key on. Checked all the fuses recommended and relays recommended all appear to be good .
I hear no noise whatsoever vacuum side seems OK
 
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