2CarPros - Car Questions & Answers

2000 Mazda Protege Repair Question


Topics covered: Heater, Door, Engine.
Mileage: 175,000 miles.

Asked on March 4, 2013

Mazda Protege Heater Problem

My heater is blowing cold air...any suggestions on what it could be? Does the heater have a fuse.....coolant is ok
Avatar Asked by frankbel

Answer

Replied on March 5, 2013

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?

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on March 5, 2013

The hoses are warm and the door moves when i change settings

Tiny Response from frankbel
25 questions asked
Replied on March 5, 2013

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?

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided

Replied on March 5, 2013

The hoses are warm...the engine is warming..does it have a fuse?

Tiny Response from frankbel
25 questions asked
Replied on March 5, 2013

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.

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on March 5, 2013

So the actual heater core shouldnt be bad?...i thought it had elements that heated up

Tiny Response from frankbel
25 questions asked

Replied on March 5, 2013

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.

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on March 5, 2013

Ok thank you for your answers....ill recheck everything...thank you

Tiny Response from frankbel
25 questions asked
Replied on March 5, 2013

Glad to help. Let me know what you find so I can direct you.

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on March 5, 2013

I will thank you....i will have to check it tomorrow..i greatly appreciate your help...thankyou for responding so prompt... :)

Tiny Response from frankbel
25 questions asked