A few months back my 2010 t&c started to leak coolant. I swaped out the coolant inlet pipe(y pipe) from the plastic melted pipe to an aluminum y pipe. Then a week later there was still coolant disappearing but I couldn't see a leak. Then I started to see where it was something was leaking at the firewall because it was soaked so I tightened the hoses on to the heated air tubes. Made sure all the clamps were tight ect. Still it was leaking then someone told me it was my heater core. So I bought one. Then before replacing I trouble shoot.. someone told me it was the tube. So I had to order online @ factoryChryslerparts.com the heated air tubes (the aluminum tubes that connect to the heater core and come out the firewall then hoses connect to the nipples of the tubes) after getting them I take things apart pull the tubes out but see no visible cracks put water through them still nothing. So what else at the firewall could be leaking coolant? Please help I'm in desperate need to have this fixed I start a new job soon. Anyone have this issue before. I am changing the heated air tubes, the heater core, and putting a few new hoses on but why would the whole firewall from where the tubes come out from all the way under the master cylinder while driving it sprays out all over the engine.. thanks in advance for any information.