It begins at the intake manifold.
I am not sure what you mean by reconfigured. If the cruise is not working the first things to check are the vacuum supply to the servo and to check the pcm for trouble codes.
the vacuum hose connects to the airbox
NoNo
Residual vacuum from vacuum reservoir.
Check the driver side of the intake for a loose vacuum line.
That is the vacuum supply for the HVAC control.
There is a vacuum problem to the internal vent control assembly. Either a vacuum leak, missing hose, or blocked vacuum port is not allowing vacuum to reach the ports of the door controls that direct air flow inside the HVAC box under the dash. Check for vacuum at the control assembly, and then that the assembly is porting the vacuum to the control pods.
I am not sure what you mean by reconfigured. If the cruise is not working the first things to check are the vacuum supply to the servo and to check the pcm for trouble codes.
the vacuum hose connects to the airbox
It all depend if it is vacuum operated or electrical. If it is vacuum check the vacuum line attached to the intake manifold, it might have come loose. If its electrical check the heater control panel.
You have a leak in the vacuum supply to the ac control.
It goes to the ac/heater control head.
Under the hood at the center of the firewall, there is a thin rigid black vacuum line connected into either the vacuum manifold or into another rigid tube... the other side goes into the firewall. from there it goes behind the dash, right behind and above the radio. then it plugs into a veresser right behind the glove box (if you pop out the glove box door, you will see it, its right next to the seatbelt control modual) from there the vacuum supply hose is WHITE, and this goes to the manifold at the back of the climate control switchbox.
When the vehicle is under acceleration it doesn't supply vacuum. The vacuum canister or reservoir holds a vacuum supply to operate vacuum operated accessories until the engine regains vacuum.
The EGR (Exhaust Gas Recirculation) valve opens when vacuum is applied. The EGR vacuum solenoid opens and closes the vacuum supply to the EGR valve when it is commanded to do so by the ECM (Engine Control Module).
Vacuum lines supply vacuum for various functions.
It all depends on what of the climate control that is sticking:Stuck on defrost only - that's a vacuum 'switch' under the dash. Find and follow the vacuum hoses , maybe up above the passenger side dash (that's where the vacuum line enters through the firewall.Stuck on a particular temperature - that's likely to be due to a failed temperature blend door actuator motor. A very common failure on Taurus/Sable climate control systems.See "Related Questions" below for more