blend door

[lincolndude]

ok went under the dash check the blend door actuator. everything seems to be working fine,door closes nice and tight and opens all the way.while it was parked got plenty of heat but when i got on highway got cold again!??????starting to piss me off!!!!!!!!!!

 

[ford nut]

The door will stay in one spot when the fan is on low.

When you crank the fan up it will blow the door over, if its broke you will know it, you should be able to take a tie wrap and put it in the heat only position.
If its broke you can move the door by hand.
Sounds like you have something else going on.

 

[marked8]

Might be a stuck open stat.

 

[lincolndude]

dosent seem like anything is broken.when it closes it closes tight and it opens all the way.when it was closed i tried to move it but it was good