So i was out in the snow today, and my 4wd kept popping in and out, the roads were all snow so it wasnt binding on pavement and it only seemed to happen at steady speeds. i was only doing about 25-30. i could feel and hear it jumping in and out and the 4x4 light would turn on and off with the system. 4.0, np231, ba/10, d30/35. vacuum issue?
Erik