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1987 944 Turbo Heating

Heating and Ventilation

Vehicle Information: Model(924/944/968): 944 Turbo; Year: 1987; Body Type: Coupe; Total Mileage: 77,000;

I recently bought my 944 Turbo from Florida. The owner was running water in the cooling system instead of the glycol mixture. (I have no idea what he was thinking.) As the car was shipped back up to Indiana, the temperatures were sub-zero. The coolant cross pipe was cracked when the water froze in the engine. Luckily, the radiator, condensor, intercooler, and everything appears to be unscathed. I had the coolant pipe TIG welded, and I pressure tested the system. The cooling system is a good, sealed unit.Now for my question. After refilling the cooling system with the correct glycol mixture, and pressure feeding and bleeding the system, my heater will not work at all. It is approximately 10 degrees here right now, and I have no heat. In fact, the car is not getting up to temperature at all. The temperature will stay on the lower 1/8 of the guage. I haven't really ripped into the engine yet, but might the thermostat be stuck? Since the car came from Florida, is it possible that the PO removed the thermostat, altogether? I plan on taking the car to my mechanic, but I am worried about driving it with such a low engine temperature.

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