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Q:

heater on 1990 Ford Taurus

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
if i idle the heater blows cold air but not all the time and it takes a long time for the heater to get warm but then it works great
(1) Answer
Sounds like a thermostat issue, really. The engine temperature seems to be too cool. Have that checked first.