Question about Ford F-150
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Posted on Jan 02, 2017
Lift and support the front of the truck so the front wheels are off the ground ( take safety precautions, chock wheels, jack stands, etc ). Key on, engage 4x4 and try to turn the front drive shaft. If it turns it is a problem with the transfer case. If it doesn't it is a front axle engagement problem. I would guess a problem with the vacuum disconnect motor on the front axle ( or vacuum lines from teh solenoids or the solenoids themselves ), but best to verify the test above to know which way to go. Post back a comment after the test.
Posted on Mar 06, 2010
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