Chrysler Repair: 1996 New Yorker AC & Water Pump/Radiator, radiator core, interior surfaces

Question
The AC blower works but does not cool.  Occasionally smoke comes out through the AC vents.  Fluid is dripping from around the Water Pump/Radiator area.  The belts hoses and clamps appear to be fine.  I have to keep refilling the overflow tank.  The engine is overheating and the heater no longer heats.  I would appreciate any suggestions and what the repairs might cost?

Answer
Those are quite a set of problems/observations. My first thought is that your waterpump is not working/leaking, so try to distinguish between the radiator leaking and the water pump. Look carefully at the radiator core/fins for signs of leakage. If none, then the other observations are consistent with a bad waterpump. You didn't mention which engine you have and the cost of replacing the pump is quite different. The 3.3L engine is simpler because it is located externally, whereas the 3.5L is mounted to the front of the block and requires more dismantling to reach.
The smoke from the AC vents too is not certain as to its source. Does it smell like antifreeze, or does it produce a film on the interior surfaces of the windows? There are two heat exchangers in the cabin associated with the heater/ac system and so you need to determine which one is leaking based primarily on its odor. Unfortunately if either of those exchangers is leaking it may require removal of the heater/ac unit from under the dash to get to them for replacement.
Until all the leaks are identified both in the engine compartment and the cabin unit it is difficult to know what needs to be done. I think there is enough going on to recommend that you look for an honest and experienced-with- Chrysler mechanic to determine what are all the leaks caused by and how to deal with each of them. This situation on its face does not appear to bode well but maybe it is not as bad as I think. It is important to get an assessment before damage is done to the engine by overheating, so if you have any intention to try to keep the car running I would seek a hands-on inspection as soon as practical.
Roland

P.S. There may be no problem with the heat exchangers in the cabin, if for example, the smoke/fumes originated under the hood and were sucked into the cabin from the external air intakes, so maybe it would make sense to focus on the known leaks under the hood, then sort out the issues with the heater/a.c. So find out where the leaks are around the front of the engine. One other question is whether you see white smoke in excessive amounts from the tailpipe when you start the car from cold? If so, that would indicated a head gasket leak which might also explain some of the loss of coolant and engine overheating. So get the leaks looked at first.