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The issue with your 1992 Buick's heater not switching from heat to defrost could be due to a malfunctioning blend door actuator, which controls the airflow direction. Additionally, a vacuum leak in the HVAC system or a faulty climate control switch could also be the culprit. Inspecting these components for damage or blockages might help resolve the issue. If necessary, consulting a professional mechanic for a thorough diagnosis is recommended.
What else can I help you with?
Selector only stays on defrosted 92 buick?
If the heat selector will not switch from defrost to the dash or foot vents on a 1992 Buick, it is possible that the cable connected to the vent is broken. When the selector is moved from defrost, a cable opens the other selected vents on the heater.
Why doesn't your heater switch from defrost to heat on a 97 wrangler?
you probabally have a vacuum hose disconnected
Why would your heat only work on defrost?
ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air? ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air?
Do cars made for Florida have defrost and heat?
Yes they have a heater/defroster.
Why do the windows fog up in a 1993 buick regal?
1. No heat coming out of the defrost duct or wrong heat selection position. 2. fresh air intake blocked or dash switch in the recirculating air position. 3. Heater core is bad if there is an antifreeze smell in the car or antifreeze is coming out the heater lower ducts or on the floor. 4. If car is equipped with internal heat control valve, the valve may be leaking.
What does heater hoses do on a vehicle?
a heater hose runs from intake to heater core to radiator. the heater core is were the heat comes from inside the car as well as defrost
Why would the heat in a Ford Econoline Van not switch from defrost to vent keeping in mind its not because the switch is broken as that was recently fixed?
The heater selection is controlled off of vacuum. wen mine did the same thing I had a broken vacuum line that was causing it not to switch.
Do you know why there is no heat coming from the heater on a 1998 buick lesabre?
no
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.
What could cause a heater to not function properly in a 1997 Grand Prix?
not function how. No heat, not enough, no fan doesnt' change heat to defrost? All different answers. No heat, not enough, May just be low on coolant. Therostat stuck open. No fan, fuse, ground, switch. Doesn't change heat/defrost? Cable, control, some switches are vacumn operated.
Where is the selector switch on a 1999 astro van?
On dash Switch that says vent heat, a/c defrost etc.
Can't defrost my windshield?
The fastest way to defrost a windshield is to turn the defrost vent on without heat or simply open the windows. Another option is to warm the inside of the car by turning the heater on.
