no heat

2001 FORD WINDSTAR
170,000 MILES
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RUFUSRICH2779
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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.
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Feb 9, 2016 at 1:11 PM
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WRENCHTECH
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Are both heater hoses at the firewall hot to the touch?
Dec 20, 2016 at 6:08 PM
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RUFUSRICH2779
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The inlet hose is and the outlet is cold
Dec 20, 2016 at 6:08 PM
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WRENCHTECH
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Then you have a restricted heater core and it needs to be replaced.
Dec 20, 2016 at 6:08 PM
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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
Dec 20, 2016 at 6:08 PM
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WRENCHTECH
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Yes, a bad heater core.
Dec 20, 2016 at 6:08 PM
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RUFUSRICH2779
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Changed heater core blend door actuator still no heat. Van at normal running temp. Coolant a little rusty
Dec 20, 2016 at 6:08 PM
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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?
Dec 20, 2016 at 6:08 PM
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RUFUSRICH2779
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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
Dec 20, 2016 at 6:08 PM
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STRAILER
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Does that model have a heater control valve?
Dec 20, 2016 at 6:08 PM
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WRENCHTECH
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No, it does not. Those 2 heater hoses are connected directly to the heater core.
Dec 20, 2016 at 6:08 PM
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RUFUSRICH2779
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What could be blocking coolant from reaching heater core could water pump be malfunctioning
Dec 20, 2016 at 6:08 PM
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WRENCHTECH
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There was no mention of the car overheating so no, I don't believe that is possible.
Dec 20, 2016 at 6:08 PM
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RUFUSRICH2779
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What could be restricting coolant from flowing to heater core
Dec 20, 2016 at 6:08 PM
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WRENCHTECH
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I've already answered that question twice. You need a heater core.
Dec 20, 2016 at 6:08 PM
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RUFUSRICH2779
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I have replaced heater core
Dec 20, 2016 at 6:08 PM
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WRENCHTECH
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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.
Dec 20, 2016 at 6:08 PM
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RUFUSRICH2779
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Its new
Dec 20, 2016 at 6:08 PM
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STRAILER
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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
Dec 20, 2016 at 6:08 PM
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WRENCHTECH
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Most of us fill by vacuum now and that eliminates all air in the system.
Dec 20, 2016 at 6:08 PM