Thread: 2004 f150 5.4 4WD won't engage (newbie)
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Old 12-30-2010, 12:33 AM
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drshort
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Just an update n the 4wd not engaging.

Both IWE actuators were shot. One had a vacuum leak. This appears to have caused the other side to lose vacuum and grind over time causing the teeth to be very worn on both IWE and hub.
 
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