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The little vents (or flaps) inside the heater system are stuck, broken, lost power (they're vacuum motors).
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∙ 15y ago
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Why would the defroster on a 1978 Nova not be blowing out any air?
Blower motor is shot or a burnt fuse.
On a1996 corvette what causes the AC air to blow out of the defroster and floor vents for about 30 minutes before blowing out of the dash vents?
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Does a broken thermostat cause the defroster inside your car to put frost on your inside window instead of remove it?
If the defroster is blowing hot air and it is still leaving moisture on the inside of the windshield, the heater core may be leaking coolant causing that condition. If the defroster is blowing cold air it could be the cooling system is low on coolant, or the thermostat is stuck open or the heater core is plugged up or the temp blend door has a malfunction.
What do you do when your Chrysler air system start blowing only from defroster?
What or why? either a wire harness has become disconnected, a fuse blown or you have an older model with vacuum lines to direct the flow of air and this system is failing. the defroster is the default setting for the direction of flow and with out power or any other force applied to direct the flow, this is where it stays. this is all the info i can give without more from you.
You keep blowing the 25 amp air conditioner and blower fuse Where is the blower on a 1991 S-10 with air?
the blower motor should be either on the passenger firewall or in the passenger floorboard below the dash
Ac blowing through defroster Ford F-150?
The AC is probably coming through the defroster because the air door is stuck. The door is behind the dash and is vacuum controlled. A vacuum leak or bad door will cause this problem.
Why is heat and defroster only blowing cold air?
Depending on the year, make and model check the following.............. 1. A/C heater control door. 2. Cables and vacuum lines. 3. A/C heater control panel.
Hot air is not blowing in your 1996 Mercury Mystique?
air is blowing bat problem is no air com to front only in class
How can you control your blowing being cold and hot?
blowing cool air, is the air only in your mouth... warm air comes from your lungs. temperature also varies by how open your mouth is while blowing air out
My 1999 Dodge Ram only blows air at the feet not at the defroster or the dash How do I fix this?
The vacuum line that goes to the defroster is probably disconnected, possibly on the fire wall.
Why would the heat stop working on 91 Chevy blazer?
Is it blowing cold air only or not blowing any air at all.
1997 Mercury MountaineerMy defroster and heat are blowing very minimum air out of the vents What could be the problem?
If that vehicle has a cabin filter, the filter may be plugged up and in need of changing.
