AC/Heat air flow problems

[Skephart]

Hi,
2001 Olds Intrigue, heat and AC work but its like its on a predetermined air flow setting. It will blow on all settings but blows out the defrost, vents and floor no matter what you have it set on. It will heat and cool the car just fine but by the time I get where I'm going my right foot is frozen. Someone told me it was the blend air door, but I thought that was just for temperature settings. Any help would be appreciated.

[82Stang]

Originally Posted by Skephart

Hi,
2001 Olds Intrigue, heat and AC work but its like its on a predetermined air flow setting. It will blow on all settings but blows out the defrost, vents and floor no matter what you have it set on. It will heat and cool the car just fine but by the time I get where I'm going my right foot is frozen. Someone told me it was the blend air door, but I thought that was just for temperature settings. Any help would be appreciated.

Sounds like a blend door issue or control head not moving the blend door. The easiest thing would be to try another control head in there. If not, then the door itself may have broken/misaligned/maladjusted linkage.

[Tech II]

No, the blend door is for temp control......or it just could be a question of semantics...

I don't think this has a "mode" door setup.....could be case of elec actuator on the blend/temp door, and the then the mode is set by various vac actuators.......loss of vac may be the problem, then....

[tacosoldier]

Originally Posted by Skephart

Hi,
2001 Olds Intrigue, heat and AC work but its like its on a predetermined air flow setting. It will blow on all settings but blows out the defrost, vents and floor no matter what you have it set on. It will heat and cool the car just fine but by the time I get where I'm going my right foot is frozen. Someone told me it was the blend air door, but I thought that was just for temperature settings. Any help would be appreciated.

I recently had this issue with my Intrigue. I believe what TechII stated, "loss of vacuum" may be your issue. For me, it started when I replaced my Upstream Oxygen Sensor from above using a long extension. During the process a thin plastic hose broke and I had a thin rubber hose to piece it back together. Fast forward months later, I began having incorrect airflow direction from my AC. No matter what setting I chose, it remained the same, flow to the feet and little direct flow. Yesterday, I popped the hood and found that the same hose popped out. After plugging it in, my AC flow was corrected. On my 1999 Intrigue with 3800, the large vacuum booster hose connects to the upper intake plenum, and the thin plastic hose (the one which I broke) connects on top of the booster hose and then wraps around the engine compartment, the vacuum diagram has it going "to accessory". Yours may vary since its a 2001.