I'm dreaming of AC via floor + vent

[Mote]

Does anyone know if it possible to modify the HVAC/EATC to direct air to both the floor and panel vents when in "Automatic"? Specifically AC. It drives me nuts sometimes to have Auto via the panel vents only. Heck, maybe re-plumbing the vacuum lines can accomplish this.

[cougar9150]

I'm not 100% sure but I thought when in auto mode the EATC did circulate between the different vents along with adjusting the blower speed.

[Vortech347]

Agree'd.

My 20 year old fox does this.

[Mote]

I'm not 100% sure but I thought when in auto mode the EATC did circulate between the different vents along with adjusting the blower speed.

Hrm... If true, then sumpthin is broken. Dang. :(

[Richy04]

Yes in theory, you have to figure out which vac relay controls what vents. then add a switch to tie them together when you hit vent for example. This will activate both vac relays to direct the servos to open. You can add a connector to the EATC and plug in the switch and mount it under the dash, flip it one way and its normal, the other way and it ties them together and they will command the servos open. The Floor defrost works similarly so the system is capable of controlling two servos at a time to open. It's just the detective work on figuring out whats what and how it is controlled.

[cougar9150]

Confirmed it on my ride home last night and the way in this morning. When in auto I get air out the dash and floor vents