White vacuum line on heater hose

[BuWaGone]

Does anyone know what the white vacuum line that connects to the same fitting as the heater hose that goes to the intake is for? The previous owner removed the heater hoses and I was thinking of putting my mechanical water temp probe in the place of the fitting, I can take a picture later

 

[MrHernandez]

If im not mistaken that is the vacuum line that makes the dash vents blow

 

[BuWaGone]

If im not mistaken that is the vacuum line that makes the dash vents blow

Thanks for the quick reply. I wonder if I could run the line to a alternate vacuum source.

 

[Champ2014]

That white vacuum line actually goes to the heater control valve. It supplies the vacuum to open and close the valve to let the hot water into the heater core to cut on and off the heat.

 

[BuWaGone]

That white vacuum line actually goes to the heater control valve. It supplies the vacuum to open and close the valve to let the hot water into the heater core to cut on and off the heat.

Even better if that's the case. My heater hoses are removed, my previous owner, no need for heaters in Hawaii! lol. I hardly gets lower then 60 here