The fan is running and it is blowing air through the vents but its hot air. This happened overnight so I'm thinking it's not needing freon ???

the door actuator isnt working

when last did you have your car fully serviced? small problames like yours can be solved in less than 2hours trust me you need someone to take a look at your car.

Usually a sign of low freon charge or flow problems.

It could be an actuator motor, but it's more likely low on freon. Check the level and I'll bet 6-12 ounces will take care of it.

Low freon means a leak, that needs to found and fixed. This could be a very slow leak and difficult to find.

Had the same happen on my Bonneville and Impala.

There is a actuator motor that controls this,and it is not working,unfortunately ,the whole dash has to be removed to replace the actuator motor.If this was at all helpful,please rate,thank you.

Are you using gauges?What are the pressures?And are the cooling fans coming on when ac is on?

Hi - There may be 2 separate problems. On my 1991 Lincoln Town Car, there is a Thermal Blower Lockout sensor that disables the heater from blowing until the engine temperature reaches a specific temperature. This way if you have vent or floor settings and 90 degrees set and it is winter, you won't get blasted with cold air. When the vehicle warms up, the TBL circuit enables the climate control to blow the hot air. If you use the flr/def instead of the floor or vent control, the TBL should not prevent the heater from working even with a cold engine. On my car, the TBL went bad and always prevented hot air from blowing on the floor and vent settings, even when the engine was hot. Another thing to check is a thermal limitor resistor. It is designed to cut off the blower at very hot temperatures, except if the blower fan is in the hi setting.

As far as the A/C is concerned, can you verify if the clutch is engaging or not? A rapid cycling of the clutch is an indication of low freon. If you are absolutely sure that you are fully charged on freon, I think there are 2 possible causes: (1) Bad pressure switch on the accumulator is indicating low freon that is telling the compressor not to work; (2) a blocked orifice tube.

on my 99 devillle concours cold air blows from left and back vents but hot air blows from right vents

Am investigating same problem. Download the free technical manual and you can find a diagram for the air mix door. If this doesn't shut you will be getting lots of heat through despite the cooling of the Aircon. I don't know how to get at it or fix it but it describes how to run diagnostics - you don't need specialist tools for this. Also a blocked pollen filter probably won't help.

Is there air blowing from the front vents? or can you hear the vacumm change when you change it from heat to cool..... I think it might be a vacumm problem... its a 1997 so the controller vacumm hoses may be cracking.. let us know