could be your vent flaps or blockage in the heater matrix.
remove hoses from matrix on firewall and see if you can get a hose flowing through there.
PS: DONT OVER PRESSURE IT WITH THE HOSE - LET IT SQUIRT. a lil bit of restriction is normal
if that checks out, let the car get warm and feel the hoses for heat
remove hoses from matrix on firewall and see if you can get a hose flowing through there.
PS: DONT OVER PRESSURE IT WITH THE HOSE - LET IT SQUIRT. a lil bit of restriction is normal
if that checks out, let the car get warm and feel the hoses for heat