No heat

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  #1  
Old 10-31-10, 04:38 PM
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No heat

My heater in my truck just blows cold air. How do I find out what the problem is so I know what to fix
 
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  #2  
Old 11-01-10, 04:10 AM
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Welcome to the forums Sopheia09!

Does the engine get warm? [temperature at gauge]
 
  #3  
Old 11-01-10, 05:11 AM
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Moved you to a fresh thread.
 
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Old 11-01-10, 02:23 PM
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What is your vehicle make, model and year?
When you move the temperature control do you hear anything under the dash moving?
Is this sudden or has the problem been getting worse over time?

The hot engine coolant travels by hoses to a small radiator (heater core) located under the dash, usually on the passenger side below the glove box. A fan blows air through the heater core. Most vehicles have a door that blends outside cool air with the hot air to give you warm. This door or the mechanism that controls it can get stuck in the cold position causing you to have only cold air but basically any part in the system could cause your problem.
 
  #5  
Old 11-01-10, 05:44 PM
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If an older vehicle, you may have a plugged heater core or a stuck thermostat.

First and foremost, make sure that you have enough coolant in the radiator.
 
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