12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

problem with front axle

Old Nov 23, 2009 | 10:05 PM
  #1  
casper83's Avatar
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From: lebanon tennessee
Default problem with front axle

when i engage 4 wheel drive everything works but the front diff, and i know it has to do with the CAD, but where do i start
 
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Old Nov 24, 2009 | 09:35 AM
  #2  
PhilipR's Avatar
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Check all the vac lines for leaks. If no leaks the CAD unit itself is probably at fault. I would just swap it out for the 4x4 posi lock kit and ditch the vac operated system if it's bad.
 
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Old Nov 24, 2009 | 11:39 AM
  #3  
Dr. Evil's Avatar
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Yeah, go over your vacume lines with a fine tooth comb.

4x4 Posi-Lok - 4WD Engagement Systems
 
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Old Nov 24, 2009 | 08:41 PM
  #4  
12valvetater's Avatar
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From: Pennsylvania
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EMS lock outs itll fix that problem forever.
 
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