My heater is blowing cold air

Tiny
FRANKBEL
  • 2000 MAZDA PROTEGE
  • 175,000 MILES

My heater is blowing cold air. Any suggestions on what it could be? Does the heater have a fuse. Coolant is ok

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Monday, March 4th, 2013 AT 10:41 PM

14 Replies

Tiny
JACOBANDNICKOLAS
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Is the engine warming up to a normal operating temp? Have you checked to see if both heater core hoses are getting hot? If they are, have you checked the blend air door?

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Tuesday, March 5th, 2013 AT 1:24 AM
Tiny
FRANKBEL
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The hoses are warm and the door moves when I change settings

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Tuesday, March 5th, 2013 AT 1:28 AM
Tiny
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If the hoses are hot and the blend air door is working, you should get heat. Are you sure they are hot and not just warm? Does the engine warm up to a normal operating temp?

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Tuesday, March 5th, 2013 AT 1:29 AM
Tiny
FRANKBEL
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The hoses are warm. The engine is warming. Does it have a fuse?

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Tuesday, March 5th, 2013 AT 1:33 AM
Tiny
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There is no fuse for the actual heat. It is produced by the engine heating the coolant and then circulating it through the heater core. After that, the only thing that will stop heat (if everything is heating normally) is the blend air door.

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Tuesday, March 5th, 2013 AT 1:36 AM
Tiny
FRANKBEL
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So the actual heater core shouldnt be bad.I thought it had elements that heated up

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Tuesday, March 5th, 2013 AT 1:38 AM
Tiny
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No, the heater core is like a small radiator that gets hot with coolant in it. If both hoses are getting hot, then you have circulation through it.

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Tuesday, March 5th, 2013 AT 1:43 AM
Tiny
FRANKBEL
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Ok thank you for your answers. Ill recheck everything. Thank you

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Tuesday, March 5th, 2013 AT 1:47 AM
Tiny
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Glad to help. Let me know what you find so I can direct you.

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Tuesday, March 5th, 2013 AT 1:49 AM
Tiny
FRANKBEL
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I will thank you.I will have to check it tomorrow.I greatly appreciate your help. Thankyou for responding so prompt. :)

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Tuesday, March 5th, 2013 AT 1:53 AM

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