Ac air flo control

recheck install either incorrectly done or something got disconnected

so my guess is want Ac COLD ARE
OR JUST THE MODE ACTUATORS FAILING
there is A manual AC system and Climate controls sys.
the are not the same.
I guess AC wanted,
the blend door stuck open is wrong,
if stuck open thee will be no cold.
the blend door closed and blocks the heater core 100%
if max AC cold is selected.
and recirc mode too is needed
a tiger by the tail, this VACUUM controls monster.
we only can fix them in a shop with a vacuum hand pump with vac gauge, and the service manual to ID hose colors
guessing is not easy here
there are 2 blend doors, left and right to fail.
blend is electric so this 2001 system is hybrid of elect + vac controls
air inlet it vacuum servo.
left and right mode actuator is electric motor drive.
frost defrost is VACUUM servo drive./
the service manual has vacuum logic table matric
showing all vacuum status, V or NV for each mode
and manual system is not like CliaMATE CONTROL

manual controls, I can not publish the whole HVAC chapter here.

17= heater core
6,= evapcore (cold)
11 is blower
16 is vac controls. dash
13 is engine vacuum, intake man, 20"hg at idle.

This is caused by a low engine vacuum, the engine vacuum is low when you accelerate, the HVAC system loses vacuum to the mode control vacuum switch and defaults to the defrost ducts for safety. You likely have a leaking mode control vacuum switch in the control panel of the heater AC system (HVAC).

the blend air door is stuck look down the heat vents to see if something fell in there

Replace the controls and try.

There is a flap that directs the air. the flap is controlled by a vacuum actuator. This is located inside the venting. The actuator is connected to little vacuum hoses that attach to the temperature control switch. Either the flap is stuck, or the actuator has gone bad.

There is a vacuum leak under the hood. Find the vacuum line on the passenger side where it comes through the firewall and follow it to the engine. You system needs vacuum to operate and without it the default setting is on defrost for safety reasons.

The bleed door controls air temp not where it comes out, dash, floor, defroster, this is most likely a mode control switch problem, that switch is on the ac control head.

a/c is active when in defrost mode to remove moisture from air. what controls the movement from vent to heat/ or defrost. a lever or switch.