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The air won't turn OFF!


jamjua3's Avatar
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02-16-05, 07:46 PM   #1  
jamjua3
The air won't turn OFF!

Hello,

I own a 93 Ford Taurus SHO. When the heat or air conditioning is turned off the air keeps blowing through the top defroster vents. This first started happening when I re-filled my car with anti-freeze. Does anyone have any ideas what may be going on with my car?

 
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02-17-05, 02:37 AM   #2  
Sounds like a vacuum hose is off or cracked, the default position is hot and defrost when vacuum is lost. Ford uses plastic lines that crack very easily.

 
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02-17-05, 05:32 AM   #3  
Is you on/off controlled by push button or a latch that you slide? A friend had a problem with a 93 Cavalier where he did not get any heat, only cold air. The cable connected to the hot/cold air latch behind the dash had broken off so he could not switch the car from cold air. Could be a similar issue on your car.

 
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02-17-05, 07:58 PM   #4  
jamjua3
It is controlled by a push button but I do have hot and cold air whenever I use the controls.

 
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02-18-05, 04:26 AM   #5  
I tend to agree with toyotaman on this. Vacuum lines on these are really easily disconnected, but working underhood would have nothing to do with the problem. That was just coincidence. Take it to mechanic you trust and have them look it over.

 
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02-18-05, 04:38 AM   #6  
The vacuum source connection is under the hood on the intake system.

 
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