I've noticed lately that when I turn my vents to Panel/Floor, the AC compressor kicks on. Is this normal? I thought this just distributed outside air to the floor and the panel vents.

 

The A/C compressor on my '99 Lightning also runs in the Panel/Floor position

 

I believe it is. I think on mine the only time it doesn't run is in the vent position.

------------------

The vehicle above is one of many. Try refreshing. It goes by random but the Expy is exactly like mine.
99 EB Expedition 5.4L, Dark Toreador Red with all the perks,3.73 LS,Heated Mirrors and Seats. Everything but sun-roof. Rhino Step Bar, Ford Bug Shield,Even the hitch propeller, More to come...




[This message has been edited by ExpyBob (edited 05-16-2000).]

 

According to the owner's manual, the compressor runs when the selector switch is in any position except panel OR floor. These are the only 2 positions (other than off) that the compressor does not run.

------------------
2000 F-150 XLT Sport, Silver 4-door Supercab StyleSide
Short Bed (Only way to fit in the garage)
17" Sport Wheels with BFG tires, 3.55 R, 4.6l V8, Auto (First one in 20 years)
In-Dash Single CD Player, 60/40 Split bench dark graphite

Mods So Far
K&N Filter, Gatorback Spray-In Bedliner, Llumar ProShield Window Tint
WMS Velocity Tube

Future Plans
Superchip, Upgraded Speakers/Stereo
FlowMaster Exhaust, Nerf Bars

 

See also the "turn this AC off" thread about how to "fix" this problem.

 

I saw the drip water underneath too when I had it on the same setting. I read the manual and it says the AC automatically comes on for all settings (panel/floor, floor defrost etc.) when the temperature outside is above 10-15 deg. celcius for dehumidification purposes.

------------------
97 Ford XLT
4.6l extend cab, longbox
power slider, tinted windows, side rear window covers

 

Y2kXLTSport is correct. My owner's manual and a book Ford sent me about FAQ's says the only positions besides OFF that do not engage the compressor are FLOOR and PANEL. A quick underhood check will confirm this.

------------------
2000 F-150 XL,RC,LB,5.4,4R70W,3.55LS,
4-wheel disc/ABS,Chestnut/Parchment,
Ford bedliner & gas/wheel/spare locks,
3" cold air box modification,Superchip,
Dynomax ultra-flow welded 3" cat-back.