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4x4 problems

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Old Jan 7, 2008 | 09:54 PM
  #16  
JOE-M's Avatar
JOE-M
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Joined: Sep 2004
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From: N. Georgia
Originally Posted by luke1213
well turns out it wasn't driver error. the vacuum pump needs to be replaced.
Hate to bust your bubble but the vacuum pump nor the PVH have anything to do with the transfer case. The hubs lock and unlock with a vacuum pulse from the PVH which is supplied from the pump. The transfer case (high/low shifting) is electrically operated. The only thing they have in common is they are both signaled from the ESOF switch on the dash.
Joe
 
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