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

2004 Ford F-150

Tiny

Anonymous

January, 10, 2013 AT 5:07 PM

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?

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