I replace the following: Radiator and cap,water pump, termostad, and checked fan..
overheating when a/c is on on 1997 Chrysler Town & Country
Did you replace the radiator with the correct one? High temperatures and high humidity in your area can be an iissue if you have the wrong radiator installed. There are at least 3 radiators for this vehicle depending on many factors such as '"tow package" with HD radiator etc. The differences in the radiators are how many rows of cooling tubes it has. It you have installed one "economy" radiator with a minimum amount of cooling tubes, this could be part of the problem. Please research your replacement part before anything else.
how did you chek the fan??? very high failure rate. i would re check them with a shop who can cycle them with a scan tool.