No heat

Tiny
RUFUSRICH2779
  • MEMBER
  • 2001 FORD WINDSTAR
  • 170,000 MILES
My heat doesn't work I changed blend door actuator and flushed out heater core. Van runs at normal temperature and radiator hoses get hot so I don't think its thermostat. I manually moved blend door and no heat still came out. My coolant is rusty looking could that have something to do with it. Air blows cold in back also.
Tuesday, February 9th, 2016 AT 1:11 PM

19 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Are both heater hoses at the firewall hot to the touch?
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
RUFUSRICH2779
  • MEMBER
  • 9 POSTS
The inlet hose is and the outlet is cold
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
WRENCHTECH
  • MECHANIC
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Then you have a restricted heater core and it needs to be replaced.
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
RUFUSRICH2779
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When I took heater core hoses off no coolant came out of heater or hoses could something be stopping coolant flow from getting to heater
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
WRENCHTECH
  • MECHANIC
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Yes, a bad heater core.
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
RUFUSRICH2779
  • MEMBER
  • 9 POSTS
Changed heater core blend door actuator still no heat. Van at normal running temp. Coolant a little rusty
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
WRENCHTECH
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And why would you change a blend door actuator when I advised you that you had a restricted heater core?
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
RUFUSRICH2779
  • MEMBER
  • 9 POSTS
Heater hoses barely warm. I left left coolant top off while van was running and coolant started coming out. I changed actuator because it was knocking and teeth on gear had broken off
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Does that model have a heater control valve?
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
No, it does not. Those 2 heater hoses are connected directly to the heater core.
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
RUFUSRICH2779
  • MEMBER
  • 9 POSTS
What could be blocking coolant from reaching heater core could water pump be malfunctioning
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
WRENCHTECH
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There was no mention of the car overheating so no, I don't believe that is possible.
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
RUFUSRICH2779
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What could be restricting coolant from flowing to heater core
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
WRENCHTECH
  • MECHANIC
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I've already answered that question twice. You need a heater core.
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
RUFUSRICH2779
  • MEMBER
  • 9 POSTS
I have replaced heater core
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
WRENCHTECH
  • MECHANIC
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With new or used?
There is nothing else that can restrict it unless your hoses are kinked. If the water pump wasn't working properly the car would be overheating.
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
RUFUSRICH2779
  • MEMBER
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Its new
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
We have had other members tell us that air bubbles can get trapped in the heater core by jacking up the rear of the car or the front of the car it can help burp the system here is more information for you, please get back to us on what you find so it can help others

https://www.2carpros.com/articles/car-heater-not-working
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Tuesday, December 20th, 2016 AT 6:08 PM
Tiny
WRENCHTECH
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Most of us fill by vacuum now and that eliminates all air in the system.
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Tuesday, December 20th, 2016 AT 6:08 PM

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