The dash controller appears to work and the blower comes on and will run faster or slower on command. The A/C compressor engages audibly and I had the Freon level checked with good results. My issue is that when the system is turned on air comes out of ALL vents (defrost, dash and heater) and on hot days blows kind of cool until car warms up then blows hot. Changing the settings on the controller don't seem to help anything. The air vent louvers below the new cabin air filter are almost closed and don't seem to move no matter what the controller is set on.
The head control in the dash is most likely the problem,the control in the dash,will have to be replaced.,only thing you can try would be to disconnect the negative battery cable for 10 seconds and put it back on,then turn the ignition on,then start,see if the controller starts to work again,if not replace the head.
SOURCE: Warm air from dash vents but cool air from defrost
The system just needs to get all the air pockets out if you switched everything like you said look around where the radiator hose meets where you put the thermostat in, there should be something on the lines of a little nipple with a 8 mm bolt on it i will have to pull up the exact setup of your Taurus but its the same general concept your car is fine you just have a big air pocket , what else you can do is while its cold right now and the car isnt running is to go take the radiator cap off the radiator and see if the antifreeze is low now that the car has cold down since you last ran it. If so feel it up top it off in the radiator and it might hurp it self and remove the air pocket all on its own... If you need any more help feel free im always on here id be glad to help more in detail once you try that and look under the hood for the bleeder ( the thing with the nipple on it) Also if you could please rate me i would greatly appreciate it.
Thanks,
Steve
SOURCE: heater control stuck blowinf hot air out vents
did you cheked if there is enough refrigrant ( freon ) in your tubes by measuring the pressure . if there is you may need to check your condensor its may be clogged and not letting enough air comes through to cool the refrigran
SOURCE: 1990 Motorhome on a Chevy P30. Heater control
the the vacuum line for a broken one, check from the engine compartment first, check the fuse and all relays, check the a/c doors make sure they are not jammed.
SOURCE: Air doesn't come out front vents
look under your hood for any vaccuum leaks. check all rubber hoses under the hood. they should be roughly the size of your pinky.
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