Is there a vacuum switch for the front differential to engage four wheel drive?

Tiny
MILTON MILLER
  • 1998 FORD EXPEDITION
  • 120,000 MILES

My Expedition will not engage the front differential, but does engage the rear differential in four wheel low. Is there a vacuum leak or a vacuum switch that might be diffective? If so where is the switch or acuator located?

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Sunday, November 6th, 2011 AT 2:21 AM

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Tiny
RASMATAZ
  • MEMBER

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Sunday, November 6th, 2011 AT 5:21 AM

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