1998 Ford Expedition Q&A
1998 Ford Expedition Question: Heater not working..
There is no "heater control valve" on an Expedition. Instead, after you verify there is hot coolant going into and coming out of the heater core, look inside the vehicle. You may have a temperature blend door actuator failing. This operates the door between heat and air conditioning and could be inoperative. Good luck. - DaveJHM
the heater is not work - Visitor
If you have the 4.6l engine there is not a heater control valve but if you have the 5.4l engine there is a heater control valve but location is very hard to find, I have searched everywhere!!! - Visitor
check for vacume leaks .... ours has BIG problems with vac leaks - Visitor
I also have a 98 ford expedition, Eddie Bauer edition, with the same issue. I flushed out the coolant system, replaced the thermostat, replaced the water pump, and replaced the vent door and the vent door actuator. the vent door actuator can be accessed by removing the center council, it is located under he dash by the passengers left foot, its hard to get to but can be done in your garage. after all of that work, I ended up flushing out the heater core and replacing the coolant temperature sensor. again its affordable but a pain in the ass, if you do it your self. I paid $45.00 for the water pump, $22.00 for thermostat, $45.00 for the actuator. plus the coolant so all under $200.00 and a lot of swearing, don't forget to bleed the coolant system, that can be done by a few revs of the engine.. I used YouTube to guide me through the process... good luck and Semper Fi - jaybe78
I went to sears to have my system charged on my 1999 Ford expedition and they said either the compressor or condenser is not working in the vehicle? Any ideas? I need to get working before hot temp...
So, here's what I've done: (1) checked coolant level, (2) confirmed blend door is working perfectly, (3) confirmed that both inlet/output tubes to the heater core on the firewall are hot, (4) torn ...
I changed the thermostat; checked the coolant level;checked the fuses and relays(to the best of my ability); discovered this truck does not have a heater control valve; verified that the rear fan d...
had stat and core replaced, inside controls work. only one hose under hood is warm
how do you change the heater coil in the expedition 98