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Q: HEATER 1997 Explorer on 1997 Ford Explorer

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
When I turn my heater on... It stays hot all the time... I try and manage the temp but it stays hot all the time... I have to turn it on then off til it gets cold, then on again... help!
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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The heater valve may be defective or the vacuum supply to it is affected in some way. You can check, or have someone check the vacuum supply to the valve when the heat is turned off, and make sure the hoses are OK too.
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