0
Your problem sounds like the common blend door problem on the Ford Expeditions, and Ford Explorer. The door is on a vertical axis and when it breaks, it can swing back and forth randomly giving heat or AC or nothing. The difference on acceleration is the force placed on the door swinging it one direction.
You can check the operation by fully opening the glove box, removing the actuator motor on top of the plenum box and examining the blend door axle. Pictures of the common fail signature are available on the heatertreater.net web site. There are several "free" fixes that mostly are worth what you pay for them. The solution on the web site is solid and proven over hundreds of vehicles and will resolve the problem once and for all.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What causes a 1999 Ford Expedition never to heat up?
Could be a bad thermostat - not closing allow water temperature to reach 195
Why cant a 1999 ford expedition get heat after changing thermostat antifreeze water pump still no heat?
heater core....
Just replaced thermostat in 1999 Ford Expedition still no hot air What is next?
If you have the lack of heat in your vehicle start by checking the heat core
No heat on 1999 Ford Expedition?
most of the time it is the blend doors get stuck it is a really big job remove the dash to get to them
You have very little heat in 1999 ford expedition and have replaced thermostat and heater core?
There could be several causes of this. The air blend door may be stuck, preventing it from channeling only hot air to the inside. You could have air trapped in the cooling system.
Why does rear heat only blow cold in 1999 Ford Expedition not work?
90% of the time it is the temp mode door actuator located in the driverside rear of the truck
Does the fuses or relay have anything to do with the front heater not heating on a 1999 ford expedition Heat in rear no heat in front.?
If one works, and the other doesn't... Switch the relays (right to left) Most probable cause
What is the number of the fuse for the heat in a 1999 ford expedition?
Check your onwer manual. If you don't have one copy and paste the link below into your web browser ; https://www.fleet.ford.com/maintenance/owners_manuals/default.asp
What causes my 1999 expedition air conditioning to blows warm air?
If the heat is on that would explain it. But if you are running the air conditioning, the compressor is on and fully charged with r134 it is probably the air mix door inside the heater stuck in heat mode.
What are the causes for no heat problems on a 96 ford ranger?
no heat in 96 ford taraus,new thermostat,has coolant in it
No heat in 1999 f 150 4.6?
no heat ford f 150 4.6 no heat ford f 150 4.6 Check the coolant level in the radiator first (NEVER OPEN HOT) most of the time it 's the coolant level being low that causes the heater to not blow hot...
Where is the heater control valve on a 1999 expedition 5.4 Eddie Bauer?
no heat front defrost dsah.
