On the fire wall I have a leak right behind the intake manifold. The car has factory air and it all works. It looks like there is a hose missing? Possible heater core line? Should there be a hose on this or plugged?
There shold be 2 heater hoses for the heater. One going to it and one returning to the engine. They should connect near teh front of the engine. You might have a leaky heater core. If you feel carpeting wet on the passenger or driver side then it is leaking antifreeze. Time to fix it.