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.
How do i replace blend door motor
Yes, the 2001 Ford F150 driver's door will fit on the 2001 Ford Expedition.
In the back/middle
You don't!
No, a 1997 Ford F150 doors will not fit on a 2001 Expedition. You will need to get a door that is made specifically for the Expedition.
Yes
i think its above the diff
I do not have heat in the car and the blend door clicks. How do I access the blend door in a 2005 Ford Explorer?
check the hatchback door shocks.
Sounds like the latch on the inside of the door is broke.
sounds like the blend door is not working
how do i replacement my blend door in my 1998 ford explorer