there is a 1/2 inch vacuum hose at the rear of the intake manifold next to the brake vacuum connection and it runs the 4-wheel drive motor on the front axle. Where does the other end of the hose hook to?
RepairPal Certified shops can diagnose and repair your 1994 Dodge Ram 2500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.