I've posted this here before and never got it figured out. The weather is getting too hot to not have recirculation, it makes the air work so much better.

So when I push the recirculation button in nothing happens, no light and the flap doesn't close. But when I blip the throttle in neutral or I accelerate from a stand still, the recirculation works for about 2 seconds. The light comes on, the flap closes, the air gets louder and then the flap opens right back up again and the light goes out. I am completely baffled by it doing this.

I replaced the climate control module with another one and it's doing the same thing. I got underneath the dash and confirmed that the flap is closing and opening right back up again.

I have replaced all of my motor mounts with factory OEM mounts, so it's not the motor resting on a wire or moving around. Also it doesn't turn off and on when I'm on the highway...only accelerating from a standstill or revving in neutral at a standstill. It still turns itself back off even if I hold down the gas.

Does anyone have any ideas or has this happened to someone else? I would be eternally grateful if someone could chime in! Thank you for reading if you've gotten this far.

 

I think it means you are low in R134a.