[diesel1962]

Hello,Could it be that the heater core is plugged?If you have the lines disconnected now,I would get a garden hose and try to flush out the heater core.hopefully that would cure your problem.Before you disconnected the hoses,Did you smell a "sweet" odor inside the car,Or notice a "fog" on the inside of the windshield?? If yes,Than you may have a heater core leak.Let me know what you come up with.. Diesel 1962........