Yes. With no hot water circulating, the heater coil/exchanger will quickly cool down to ambient temperature and the fan will blow cold air into the cabin.
The pump that moves hot water through a hot water heater is the recirculation pump. This pump moves the water through the heater and back through the intake line.
From your description of the symptoms it sounds as if the water pump has failed. No water pump equals: no coolant water circulatiing in the engine to keep it cool as well as no water circulating through the interior heater.
It could be like my 95 F250. The fan tips on the water pump were rusted off. It would keep the engine cool but the pump could not push water up to the heater. Replace water pump. Took me 2 hrs to replace water pump and 100.00.
Check the coolant in the 96 Taurus. Check to insure that the thermostat is working properly, and that the water pump is working.
Probably not.
MY CAR WAS DOING THE SAME THING NO HOT AIR COMING OUT OF THE HEATER I CHANGED THE THERMOSTAT. IT WASNT THE THERMOSTAT. I GOT TO CHECKING AND THE SEAL IN THE WATER PUMP WAS BAD. I REPLACED THE WATER PUMP AND IT WORKS FINE NOW.
The best way to troubleshoot and repair a malfunctioning water pump in a water heater system is to first check for any visible signs of damage or leaks. Next, ensure that the power supply to the pump is working properly. If the pump is still not functioning, it may need to be replaced or repaired by a professional plumber or technician.
Low coolant? Thermostat not opening? Heater core restricted or plugged? Heater core airbound? Water pump not circulating coolant? Temperature control not working?
Generally, the upper heater hose leads to the water pump.
Check to make sure that the engine coolant is full. The thermostat must be working properly as well as the water pump. The hoses going to the heater core should be warm from the water if the climate control is working on the heat side.
Water Heater Troubleshooting Hot Water Heater Maintenance Commercial Tankless Water Heater services Discount Water Heaters Electric Water Heater Problems Water Heater Heat Pump
heater core stopped up, heater control vavle not working, controls under dash not working, low in coolant, theromstant, radiator not flowing properly, water pump.