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1963 Ford Falcon heater will not blow warm air. 180 thermostat

Everything else works great.

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A common problem could be the heater lines are clogged with debris, given the age of a 63 ford, you could change the rubber heater hoses that go to the heater core and see if that helps, if not, flush the heating hoses going to/from the engine,radiator
I've hade to do this to a 69 ford fairlane, and it was realatively simple to do

Posted on Nov 20, 2008

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2002 Ford Taurus, Heater blows cold air?


What have you checked so far ?
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Feb 23, 2015 | 2002 Ford Taurus

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Bad thermostat? Heater gets warm, but cools down as thermostat fluxuates between 180 and about 230. It goes back and forth when it is @180 heater blows warm air, but when it goes to 230 etc. the air b


Are you sure there are no air pockets in the cooling system ?
You should have heat anytime the engine temp is above 140 degrees regardless what the thermostat is doing.

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Heater issue


This sounds like a thermostat that is fully open all the time. It allows the engine coolant to warm when sitting still (no air being forced thru the radiator), but even that goes away when moving, since the air through the radiator will remove that heat from the coolant. Does you van have a temp gauge? Is so, at full operating temp. most vehicles have coolant temps of 180-195 degrees F, depending on the thermostat installed. Anything less indicates a thermostat that is starting to malfunction.

Dec 08, 2013 | 2000 Mercury Villager

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My heater is blowing cold air when the vehicle is stopped, still blows warm air when car is in motion.


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Jan 02, 2013 | 2008 Ford Explorer

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I have an 1994 ford escourt wagon LX...i have replaced the thermostat and housing and back flushed the whole system..the air still doesnt blow hot enough air to warm the car up inside..this needs to be...


Even though you already flushed it I will bet the heater core has build up in it. My escort did that and i had to hook a garden hose direct to the heater core and flush it with dawn dish soap both directions several times untill all the slimy old antifreeze inside it finally broke loose and came out. Then it worked great

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We replaced the thermostat in ford f150 but heater still blows cold air


another expert named:
telemachus
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First, if the engine seems to take forever to warm up, you may have a stuck (open) thermostat. Replacing the thermostat would help get your engine to warm up quickly and maintain the proper running temperature of about 180 deg F. This would solve your heater woes.

However, if the engine warms up normally but the heater just doesn't seem to put out, check the heater inlet valve. This valve is usually next to the firewall on the engine side and is activated by cable(s) or vacuum lines. It is common to find that the valve cables have frozen, the cable ends have broken off, or the vacuum lines are disconnected or broken. Another common problem on vacuum run valves is that the vacuum diaphragm that operates the valve has failed. The diaphragm won't "hold a vacuum" meaning that it leaks and won't operate the heater valve.

If all that seems to work okay. The heater core could be getting warm coolant through it but the underdash heater air handler box has a movable door inside that is not in the requested position. These doors are operated by cables or vacuum lines---so same checkout as above.

Jan 31, 2011 | Ford F-150 Cars & Trucks

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I have a 2001 expedition 4.6 liter. The air works great but when you turn on the heater it doesnt get warm. air blows out but its not warm. what is the problem? please help


is your engine antifreeze at correct levels is thermostat opening and closeing at correct engine temp theres a little door up inside your air duck that switchs it self when you switch from ac to heat it may be stuck open

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We bought a 1988 Chrysler LeBarron and cannot seem to get HOT air to blow. It is barely warm and we've replaced the thermostat, radiator, heater valve and we have checked the heater core and it has great...


Could be thermostat. Even though you had it replaced the recommened temp is 192. You probably have a thermostat with an alternative temp of 160 or 180. This will make your car run alot cooler than it should.

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1 Answer

Heater doesn't blow warm air. Not the thermostat


Sounds like either the valve which lets water into the heater core is not working properly or the vacuum operated door which directs blower motor air over the heater core is not opening, Could be a vacuum hose loose or it has a hole in it.

If you want to further discuss, let me know,

Apr 28, 2009 | Ford Econoline Cars & Trucks

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