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Heater just blows cold air

Tiny
WHISPERS_HOPE
  • MEMBER
  • 1998 FORD CONTOUR
  • 95,000 MILES
This car's heater doesn't work. The blower works, and the A/C works as far as I know. I want to know what I should look into first as far as fixing this problem. There hasn't been any fluids leaking into the car's passenger side, the fuses are all fine, so could it be plugged up somewhere?
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Sunday, February 16th, 2020 AT 10:16 PM

2 Replies

Tiny
JOETECHPRO
  • MECHANIC
  • 705 POSTS
Hey WHISPERS_HOPE,

It could be caused by a plugged heater core.

Have you checked the engine coolant level?

If the coolant level is good then you can use the method attached below to check if the heater core is plugged.

Let us now what you find here.

If you have even heat at both hoses of the heater core then you may have a problem with the blend door motor not moving the blend do to channel hot air.

I have attached the instructions for replacing the blend door motor below.

If you change the heater control from hot to cold can you hear/feel the blend door motor moving?

Regards, Joe
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Sunday, February 16th, 2020 AT 10:59 PM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

That's a possibility. I would start by checking the heater hoses. They will be the two hoses going into the fire wall in your engine compartment. Please check the heater hoses and get back to us with what you find out. We can go from there.

Thanks,
ALex
2CarPros
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Sunday, February 16th, 2020 AT 11:00 PM

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