Question about Cars & Trucks
Air from vents goes to demister when accelerating
You have a loss of vacuum from the engine check the vacuum lines to the vacuum storage canister under the hood. If the vacuum form the engine is ok check the lines to the control head in the dash one may be pinched or restricted or the vacuum switch may be faulty and leaking.
Posted on Oct 25, 2012
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Posted on Jan 02, 2017
Go to your idrive., climate the vent settings. you will see a person along with vent areas on the side.
If this persons color is blue it blows cold air so turn the dial for vent closest to that person until the
color changes red then hot air comes out on the vents for driver and passenger. Then let me know.
2006 BMW 530i sport
Posted on Feb 01, 2009
ONE OF THE HEATER DISTRIBUTION FLAP MOTORS FAULTY.UNSCREW GLOVEBOX AND YOU WILL SEE THE ONE THANS NOT WORKING(TURN ON BLOWERS TO TEST)
Posted on Feb 18, 2009
u have a loss of vacuum to the ac mode control switch, this switch applies vacuum to diff vacuum motors to move air to diff outlets, dash, floor, defrost etc. either the vacuum line or vacuum resivior at the engine is leaking or the mode control is leaking vacuum.
Posted on Aug 14, 2009
Sounds like either the computer that controls the auto climate control has gone out or you could have a vacuum leak. I would definitely check the vacuum leak first. I took my 98 Lesabre to a repair shop several years ago for the same problem. When I picked it up they told me my computer was out and it would cost around $600 to fix. As an alternative, they had unhooked and rerouoted vacuum lines, breaking a tube off the controls under the right side of the dash. They told me that they would have to remove my glove box each spring and fall and reconnect the vacuum lines to change the airflow from floor to dash and vise versa. My fix was to run the lines under the dash just beneath the ash tray and connect shut off valves to the vacuum lines. Now when I need to use the AC I can change the flow of the vacuum by simply turning these two valves so that the flow changes from floor to dash or back. I know this is pretty jack leg but the damage had been done and this has actually worked pretty good.
Posted on Aug 23, 2009
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