Orfice tube on a 2005 Ram 3500 desiel?
A 2005 Ram 3500 diesel doesn't have an orifice tube in its air conditioning system. Instead, it uses an expansion valve. The orifice tube is a simpler, less expensive component found in some systems, but expansion valves offer more precise control over refrigerant flow, which is beneficial in heavier-duty applications and contributes to better cooling performance.