I HAVE BEEN HEARING A NOISE FROM THE FRONT END ...

  • Tiny
  • Anonymous
  • 2004 Ford F-150
  • 160,000 miles

I have been hearing a noise from the front end like the 4x4 is trying to engage without me hitting the switch. I discovered that one of the vacuum lines has been disconnected at the check valve. Are there any vacuum routing diagrams for the 4x4 system out there?

Thursday, January 10th, 2013 AT 5:07 PM

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