Air-conditioning not icy cold inside my VW Passat TDI 1996

Jul 25, 2009

- evaporator its looks like a little heater core or condensor.it consist of refrigerant coil packed in a dense arrangement of thin cooling fins.its in a housing it sets in your dash.when AC turned on.the warm air from the passenger compartment is blown through coils.and fins of the evaporator.now if the orifice tube or expansion valve.when the refrigerant flows through as a low pressure atomized liquid into evaporator.if there is a lot of moisture in system it will freeze up blocking refrigerant flow in evaporator.that what causes your air not to get cool enough.in a case like this you should replace AC accumulator.that holds a lot of moisture.and replace orifice tube if your AC have one. all AC dont have one.to get it right its going to cost you.all the refrigerant is going have to be discharged and recycle. then your AC then has to be evacuate to pump all moisture and foreign material out of system. then new fresh refrigerant can be put in system.