I posted recently about my 08 T&C. I can not find a leak anywhere but when I run my ac I smell antifreeze. I do not smell it when I run the heater. I can also smell it outside the car. I thought maybe it was the heater core. I had it pressure tested today and the mechanic had it under pressure for about an hour and said it never lost pressure. I am stumped. Does anyone have another idea.

 

There is a plastic "Y" pipe in the heater hoses drivers side rear of engine compartment. Sometimes they will leak and it drips right on the EGR valve, You may never see a wet area. To see the leak they will probably have to pressure test it hot.