12 Valve 2nd Gen Dodge Cummins 94-98Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps
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... JOIN NOW TO REMOVE TRACER
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.