1986 Buick Century "ac control vacuum lines" Questions

...ac is on. Check the vacuum line from the engine that feeds into your AC/Heater controls. If it is cracked, broken, or collapses under vacuum, then replace it. it doesnt stop blowing. its switching to ...

ac and heat air flow stuck in defrost postion up top . The hvac blend doors are vacuum actuated. It takes vacuum from the intake manifold via a line that goes through the firewall just right ...

...control. It only blows out warm air on the drivers side and semi-cool air on the passenger side. We have "re-charged" the ac and still no difference. How much freon does a Buick Century limited take. ...

...ac on car will most likely stall but when driving it runs great check for vacuum line leaks , also remove and clean the idle air control motor and clean its hole if problem persists,get the ecm ...

...vacuum lines for the ac? My ac will not blow out of the front vents I believe I have a vacuum leak since the ac works great on the floor and defrost I read somewhere it defaults to that if there is a ...

...AC heater control, and I want to splice where the vacuum If the line is bad, pull bad one and go to local parts store and get needed length. Actually, whenever I've had to go that deep, I replace all ...

...control to various parts of the heat/AC system. The other thing to check, is if there is a small check valve that may be faulty in the supply line that comes through the firewall, to control. You'll ...

...ac lines and hoses? Why is there no air coming out of the other vents? If I remember correctly, your truck has a combination of vacuum and electric actuators in the air box. The temperature control ...

...AC system. My first cars used metal cables, then came along vacuum line control and most now use electric control actuators. They control things such as how much air from outside the car come inside, ...

...AC air comes out defrost sometimes and comes out dash panel vents at other times what position is the control switch in? does this occur when accelerating? the door that directs air flow is controled ...