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6/27/08 8:53am - Original Message: 'A/C down around the ankles'
KeBo
Former Member
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Kendall Park, NJ - USA

Vette(s):
1981 - 59 Beige over Cinnebar leather. Edlebrock top end, 2200 stall w/shift kit, 3:55s, Mufflex maniback exhaust, nice stereo, 16 in AREs w/BFGs

Joined: 3/9/2005
Posts: 789
My A/C blows out thru the floor vents. I suspect something is amiss with the console controls not routing the air thru the correct passages.
 
A) Does my hunch seem correct?
B) Must I pull the center console to fix this?
C) Thoughts?
 
Thanks!  KeBo
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6/27/08 9:29am - Reply: 'A/C down around the ankles'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
Yes
Yes
No



Prolly have a vacuum line off, possibly in the engine compartment. A more likely cause is gonna be in the control switch(es) in the console. The vacuum switch there can/will dry out over time, and create what amounts to a vacuum leak, so when you move the lever to change the "mode", there is no vacuum to pull the servo and change the door positions.
If you can get in a really quiet area, start it up, close the doors/windows, and listen around the HVAC control in the console for a hissing noise as you move the lever slowly from position to position, stopping in each position for a few seconds to allow the switch to complete the vac. circuit. If you hear a constant hiss, that will be a vacuum leak. You may normally hear a little hiss as the doors change, but a constant hiss is a leak.
You'll prolly wind up changing the control..

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6/27/08 9:35am - Reply: 'A/C down around the ankles'
KeBo
Former Member
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Kendall Park, NJ - USA

Vette(s):
1981 - 59 Beige over Cinnebar leather. Edlebrock top end, 2200 stall w/shift kit, 3:55s, Mufflex maniback exhaust, nice stereo, 16 in AREs w/BFGs

Joined: 3/9/2005
Posts: 789
Joel - Thanks Bro!
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6/27/08 12:52pm - Reply: 'A/C down around the ankles'
VetteSpecialties
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Mounds View, MN - USA

Vette(s):
70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe

Joined: 5/24/2007
Posts: 1031
Another common problem is the diaphragm in the actuators.  There are several on an AC car.  The one that leaks is always the one that is hardest to get to.  On my '68. the bad one required removing the gauge cluster, right side dash, and entire heater box.  Then 30 seconds to change the actuator.

Good luck
Larry


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7/1/08 6:10am - Reply: 'A/C down around the ankles'
terntes
Former Member
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Little Rock, AR - USA

Vette(s):
1982 Collector Edition

Joined: 7/10/2007
Posts: 116
My '82 blows air on the ankles, there is ducting there. Maybe your model does not have ducting to the floor.
terntes
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7/1/08 6:13am - Reply: 'A/C down around the ankles'
terntes
Former Member
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Little Rock, AR - USA

Vette(s):
1982 Collector Edition

Joined: 7/10/2007
Posts: 116
I was checking the assembly manual regarding the vacuum leak to my defroster and the manual indicated and clearly showed electrical wiring routed over the floor duct labeled AC.
terntes
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