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Why does the defrost only work will not blow heat from the other vents?
Wiki User
∙ 15y ago
your switch is activated by vacume. check all your vacume hoses around your engine to see if they are cracked or disconnected. start with the little black ball under the air filter box, and follow the vacume hoses from there.
Wiki User
∙ 15y ago
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Selector only stays on defrosted 92 buick?
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Why heat blows out vents only not defrost or floor?
Most likely a bad or disconnected vacuum hose to the defrost/floor selector in the heater ducting.
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you need a head casket
Why does the heat not blow through the vents in your house?
Likely, your blower (fan) is out.
What would make the heat blow out of the defrost vents and not the front vents of a 1995 Cadillac Sedan Deville?
The moveable "baffle" inside the dashboard is not redirecting the air flow as it should. It's operated either by vacuum or an electric motor, in either case, repair is going to require the removal of the dashboard.
What Reports are available on 1996 Oldsmobile regency 98?
RE: 96 OLDSMOBILE 98 REGENCY ELITE, V-8, 3.8 WHAT PART NEEDS TO BE REPLACED SO THE A/C AND HEAT VENTILATION WILL BLOW OUT OF THE FRONT VENTS AND NOT ONLY THE DEFROST?
1991 Chevy G20 van- Why won't airconditioning blow out of dash vents instead of defrost and heat vents?
I had a Chevy van of this vintage and I found a vacum hose leak in the controls that would make the heater/defrost door default too defrost open. lisining carefully under dash or under hood may pinpoint leak. I had a Chevy van of this vintage and I found a vacum hose leak in the controls that would make the heater/defrost door default too defrost open. lisining carefully under dash or under hood may pinpoint leak.
