If fresh air is selected it will automatically switch to recirculation and flash

Recirculation Control The recirculation control determines the air intake through the recirculation actuator. When the recirculation switch is pressed, a signal is sent from the switch to the recirculation actuator through the recirculation signal circuit. When the actuator receives the signal, the actuator moves into the recirculation mode. This circulates air from inside the vehicle instead of fresh air from the outside. Recirculation is available in any mode and can be selected with the blower motor in either the ON or OFF position.
Air Inlet Valve Actuator Replacement
Removal Procedure

1. Remove the Instrument Panel (IP) compartment. Refer to Instrument Panel Compartment Replacement .

remove the glove box
Remove the connector (2). Remove the two screws (1) and the air inlet actuator (3) from the HVAC module.

doulbe posted, backup one.

manual AC you set fan speed etc, auto you just set the temp where you want it and the fan will automatically adjust it's speed to maintain the temp you selected, it also automatically goes from recirculate to fresh air.

Hi. The most common cause of the fogging is the selection of the "recirculate" mode, with the defroster on, on your heater control panel..

The Recirculate mode is the selection where the car has an 'arrow doing a u-turn" in it.
Select the other mode (which is the 'Fresh' mode);
the car 'with an arrow running thru it'.

Recirculate mode is ONLY for use with the AC on.
Always use Fresh with the heater and the defroster.

That was a very good question, and one that I receive quite often.
The owner's manual does not explain this very well.

If the vehicle is equipt with an ambient air temperature display, the sensor also prevents the AC clutch from engaging if the outside air is below as certain tempreture. To test, turn the AC on. Press and hold the AC button at the same time as you press and hold the recirculate button. Hold for 5 to 8 seconds. If this is the cause of the issue, the AC will kick on and you will hear the compressor clutch engage. This should also reset the sensor and correct the issue.

The air flow does not 'increase' with the recirc button pressed. The fan motor blows at specific speeds, no matter whether fresh or recirc is selected. The recirc feature is there so that you do NOT admit 'fresh/hot' air from the outside into the AC box. In short, the recirc feature is to re-use, or, recirculate the existing air in the car. When it is properly working, on a hot day, the recirc selection should drop the internal temperature at the center air vent about 6 degrees lower than with the fresh selected.

If I understand correctly the A/C light goes on and off. If so, try to gently push the switch to the side(Not in) while the A/C is on. If this keeps the system working, you need a new control assy(Complete control head)

According to the shop manual you do not have one.
Air Distribution and Filtering Printable View (79 KB) NOTE: The air distribution system of this vehicle cannot be equipped with a cabin air filter.
There are 2 sources of air available to the air distribution system:

• Outside air
• Recirculated air

Recirculated air is automatically used when the electronic manual temperature control mode selector is set in the MAX A/C or OFF modes and can be selected in any mode other than MAX A/C, OFF or DEFROST by selecting the RECIRC button. Recirculated air is available in all modes except DEFROST. If the vehicle is equipped with an electronic automatic temperature control (EATC) system, recirculated air is used in OFF and is available in all modes except DEFROST. RECIRC mode is a timed function in FLOOR and FLOOR/DEFROST.
Air distribution within the vehicle is determined by the electronic manual temperature control (EMTC) function selector switch position, or is controlled by the EATC system in the AUTOMATIC mode. The air distribution mode on EATC vehicles may be overridden by the driver if desired. Air distribution doors are used to direct airflow within the heater core and evaporator core housing and the plenum chamber. An electronic mode door actuator is used to position these air distribution doors. One air inlet mode door is used to switch between FRESH or RECIRC air inlet. An electric actuator is used to position the air inlet mode door.
Air enters the passenger compartment from the:

• instrument panel A/C registers.
• heater outlet floor ducts.
• windshield defroster duct.
• side window demisters.
• center flow-through console (if equipped).

Passenger compartment air is exhausted from the vehicle through open windows or body air vents.

Mine has always done this. As far as I can tell it is just Engaging in anticipation of a Person wanting to change the Temp. Computer Signals it to do this.