I have owned many vehicles over the years but this will likely be my last Ford because of the sheer lunacy of their design. Replacing the core is easy, getting to … it is a day's work. Someone has told me that it could be the heater core control valve but i cant see it or i dont know where it is. Harbor freight does have one that scans a live reading of engine sensors for 79. There are two hoses going through the firewall to the heater core.
When removing hoses make sure to mark the hoses which goes on top for proper replacement. It is likely stuck closed if the engine is hot but the lower radiator hose is cool. Coolant will still leak out of it while the engine is running. So Im considering buying one to check this out. The heater core is difficult to change on the Ford trucks. This door controls the air flow through the heater core and failure is common on Ford trucks. Replacing the core is easy, getting to it is a day's work.
But I was thinking maybe its the water pump the propellers might be worn off and its not generating enough pressure to get through the cores strong. I did end up calling them. And why I was turning the temp knob I could see it opening and closing. The engine of your truck is busy circulating water and coolant and, as it does, it passes water over the heater core, allowing your passenger cabin to become warm. The heater core is essentially a miniature radiator that fits underneath your Ford Expedition's dashboard. That is just insane what they charge.
Than they wanted to change the actuator doesn't the actuator just control the blend door? Ford Expedition Replacement Heater Core Information A heater core is a central element of a car's heating system and you will certainly notice if you are having problems with yours. After you remove that then you need to remove the Plenum Assembly. This will prove fatal in sufficient quantities. Sorry for the long post, but this is just getting annoying on my end and want to make sure I get to the bottom of this. Is doesn't seem like your engine is overheating. All you may have is a bad hose and that can easily be replaced.
If you take to dealer be prepared to spend between 900-1200 dollars. For diagnostic information on how to check the operation of the blend door and a cheap easy fix, check the heatertreater listing on Ebay or the web site at heatertreater. It's not the water pump or the engine would overheat or the pump would be leaking coolant. Replacing the core is easy, getting to it is a day's work. Not for the faint of heart! Be careful when checking your coolant level it is a pressurized system.
I did my own and it took a good 5 hours to remove and replace everything. If you have a pool of coolant on the floor, you'll have to go after the core. Temperature blend door half open or closed will cause a low heat condition. Just about every vehicle is difficult to do a heater core although some are easier than others depending on your mechanical ability. With its waffle design, our heater core replacement for Ford Expedition keeps your defroster working through whatever conditions your encounter.
It is almost above the transmission tunnel and… A lot of people assume that the problem is the heater core. Anyone ever attempted their own? When the engine is warm, have someone rev the engine in park up to 2,000rpm and hold it there then check the t fitting again to see if the temperature changes. Its starting to snow here so want to get something done. Feb 11, 2015 You will have to change it out! Feb 12, 2010 an expedition has a heater control valve, being from california the heat rarely got turned on so the coolant just sat in the core, expeditions are prone to plugging up heater cores anyway and this would be my guess as to what has happened. Thanks for any input Here is a list of components that can cause low heat output: A wrong temp rated thermostat will open too soon will cause low heat output I know you just replaced it.
It will show you how difficult and amount of work. One day to disassemble and the next day to assemble. Have the blower on hot and blowing to see if the temperature of heat blowing out the vents is hotter with revving. Heres what Ive done and verified: -Had the cooling system flushed and had both heater cores back flushed-good flow through the cores. The HeaterTreater alternative will solve the problem at a fraction of the cost and work and is well within the capability of the average shade tree mechanic. Im having a tough time locating someone who has a scan tool of any type that can live monitor the coolant temp sensor so I can know whats actually going on. You may want to go to a car parts store, or book store, and get a repair manual for your car.
They have it buried in the plenum box and you have to remove the steering wheel, steering column, dash, evacuate the refrigerant system, drain the radiator, and remove the plenum box to get to the core. They are all usually in the dash which usually requires it being removed, some are accessible through the glove compartment. The HeaterTreater alternative will solve the problem at a fraction of the cost and work and is well within the capability of the average shade tree mechanic. Most vehicles you can barely even grab onto the hoses without having to let get go right away. The Expedition is particularly difficult to get to. This is not an easy job believe me about-900-1200 job. The more you provide makes it easier for those that try to help you It also may be better for you to start a new thread for your problem.
However, this project is done with great difficulty. I live in Florida so I am simply going to bypass the heater core altogether. The valve is usually vacuum-controlled, which is operated by controls on the dash. Air stuck in the heater core will cause a low heat issue. I have found the heater core lines but cant see the valve.