No heat

If you are refering to is the power then you can just remove the fuse. If the heater core is leaking , then you can bypass the heater core. disconnect the lines going into the heater core and using a connection connect them together so the cooland still circulates.
check out, how it works
then click on, cooling system
then click on, heater questions

how it works is on the left of the screen
there will be questions there that refer to heater core leaks

1999 Ford Expedition
Heater in front vents are not as hot (just blows warm) as the rear vents (blows HOT).
I changed the thermostat.

Have you had the blend door checked? Also, with the engine hot, running, and the heater on high, do both heater core hoses get hot?

Let me know.
Joe

we have replaced the radiator,heater core,thermastat but my heater blows cold air> what do we do know?

Blend door fault most likely controls or actuator Atuo or Mnaual Air?

When I trun my heater on I get no hot air. I have changed the thermostat and repalced coolent but still have no heat.

Check the heater core if its clogged-up if not could be an air mix/blend/mode door problem and vacuum/actuators-Also if it has a heater control valve check that too.

My heater works sometimes. it blowns cold air sometimes and hot air sometimes

Hi:
Check the coolant level. It may be low. If it is full, let me know and we'll go from there.

Joe

My wife has no heat in her vehicle. I have checked both lines going into the core and both are warm. But no heat inside. What could the problem be?

Warm? that may not be enough. Compare the temp with the upper radiator hose.

Ok

enter your question...I have a 99 Expodition with triton engine great runner but the heater in front blows only cold air. Not sure why. Back heater works fine. thanks!

Check the blend door. Make sure the heater core hoses are getting hot. If only one does, flush the heater core.

my heater will not get warm all it does is blow out cold air

possible causes are thermostat stuck open, low coolant level and plugged heater core. the last one I want to address is the blend door motor. it is inside the car behind the radio and it fails very often. it is an electric motor that moves the mode door from cold to heat. a shop can check it for you to verify. if you hear clicking noises when you change from cold to hot, that most likely is the issue.

Roy

My heater only blows luke warm air. The coolant checks oiut ok and the blower works and i replaced the thermostat but it still only blows luke warm. What other areas should i check before taking it in for a reapir. ki can live with this and its an old car so i dont want to spend a lot of money on this reapir. The air conditioner works well as does everything else on the car

Check if the heater core is clogged-up and also the heater control valve if its functioning properly

thank ypu for your reply

I installed a new thermostat.........hoses to and from heater core are quite warm to the touch.......blend door is operating......still no heat. What can I check next?

Check if it has a heater control valve, you sure the heater core is not clogged-up-also test the new Stat

With the engine running, hot, and the heater on, are both heater core hoses getting hot?

Heater Valve where is it & how do i check it on a 98 expedition 4wd 5.4

its on the heater core hose, find them at the fire wall and follow it back towards the engine, you will see it tied into the line.

Heater problem
1998 Ford Expedition V8 Four Wheel Drive Automatic

I recently changed the heater core in my suv and the heater still does not work, air seems to flow freely however the air is a mild warm temp...what could be wrong?

Does your truck have a cable actuated heater valve?

I have replaced the thermostat but still have no hot heat, could the water pump be bad?

[quote:2638b496d8="bkhawk"]Heater problem
1998 Ford Expedition V8 Four Wheel Drive Automatic 130000 miles
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I have replaced the thermostat but still have no hot heat, could the water pump be bad?[/quote:2638b496d8]





is it over heating do you have rear heater how’s the heat on that
isolate and flush the heater core