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Q:

heater not blowing hot air on 1990 Ford Probe

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
The heater blows out cold air instead of hot air. I've changed the thermostat. My car also overheats. What could it be?
(1) Answer
You may have a bad water pump, but get this looked at by a mechanic that can diagnose this and determine if any damage has been done to the engine from the overheating.