Question about 1998 Ford Econoline
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Posted on Jan 02, 2017
thanks for those suggestions. i did have a total radiator flush and tank replacement done 1 year ago on my 2002 ford taurus. after wards the mechanic let my wife know if i had any problems i might have to do with the heater core. i also dont get much heat. and when i do it usually is because we are at 30-60 miles per hour. it is slow to heat anyways. my thinking was heater core because of the gunk i had before it flushed. i did put radiator cleaner in and ran for a long while. i did a back flush and the water pump squeals but no leaking. i did take hose off of the tank on radiator side and blew into it and the pump quieted down. when presurized the flow from the tank is working fine. i just dont know if it is the heater core or the pump or the valve? as i was reading this article the tests of the hoses were the same. i know it is a long process to replace heater core and that is why i am on here is to get to a site thats free to get instructions on replacing the heater core incase these other techniques dont solve my problem. if any one out there has info where i can go i would be greatful. my wife can be like a heater blowing cold to warm air. not very pretty.not to mention the time to replace the heater. do i have to take something apart to access the vent valve to see if it is working?
Posted on Nov 07, 2008
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,
Posted on Apr 28, 2009
The usual problem after changing a thermostat, is an air lock. Bleed the air out by loosening the return hose from the core and carefully move the hose a little to allow the air to escape
Posted on Nov 12, 2009
SOURCE: heater blows cold
If no coolant flowing through the heater core then ther is no heat. There are 2 possible root causes needed to check out: 1- THE VALVE TO CONTROL THE COOLANT FLOWING TO THE HEATER CORE IS NOT OPENING AS DESIRED. 2- THE HEATER CORE GOT CLOGGED UP AND NEED TO BE FLUSHED.
Posted on Nov 15, 2009
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Temperature Control Blend Door Failure No Heat or no AC (dependes on
where door sticks)
all modern cars there is a tiny DC electric motor driven gear drive
that moves a plastic door that blends heated and cooled air from the
AC and the heater core, this is called (interestedly enough) the air
temperature control blend door actuator. The motor that moves this
door fails because the door starts sticking from warping, most common
complaint is no heat but it can be no AC as well. To replace these
parts (blend door and blend door actuator) you must remove the entire
dash from the car. Always have this problem confirmed by a dealer or
qualified repair shop as it is a very expensive repair.
Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.
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