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A/C blows on Floor and Windshield

G

ghfun

Guest
I noticed two weeks ago, after starting the 96 C4 the Climate Control starts with the air blowing on the floor and Windshield and took a minute maybe 2 minutes to switch to blowing out the AC vents. Yesterday and today it wil not switch to the AC vents at all and none of the vent air flow buttons work. I thought the doors controling the air flow direction were vacume controled but when I pulled out the climate control module it has no vacume lines attached. Any help will be greatly appreciated, its hot in the south and this problem is the pits. Thanks! I'll check back or email ghfun@aol.com.
 

vigman

Motor head!!!!
Joined
Feb 13, 2001
Messages
3,471
Location
Valencia, CA,USA
Corvette
88 Convert ( SOLD ) /1973 coupe 4 speed/1964 Vert!
Gotta inspect your VAC lines under the hood. YEAH all of em. the one you seek in a 96 ( I believe ) runs from the pass side of the air runner( intake ) twds firewall and it's a moulded HARD plastic line which snakes down twds the firewall.. SOMETIMES it gets chafed or melted and leaks.. Listen for a hiss.

I believe the vac goes under the dash to the actuator box.... not the head.

Is it MANUAL AC or AUTO?

Vig!
 

vigman

Motor head!!!!
Joined
Feb 13, 2001
Messages
3,471
Location
Valencia, CA,USA
Corvette
88 Convert ( SOLD ) /1973 coupe 4 speed/1964 Vert!
Correction,

It does go the the actuator (in a 93...should be same) which is under ther dash over your toe when your foot is on the accelerator.

There is a coupling behind the radio for INCOMING vac.. then it goes to the control head.

The VAC feed LOOKS like it comes in from the CENTER of the firewall.

It sez in the book you can get to the vac connector by removing lower left trim panel.

Looks kinda like antenna connector.

The book dosen't state where the VAC sources from.

But it does say there is a check valve in the line ( those fail )


Have fun hunting


Vig!
 
G

ghfun

Guest
ac blows on floor and windshield

It is auto climate control - Thanks for the info.
 
G

ghfun

Guest
Thanks buddy your great. I will get on that tomorrow.
 

vigman

Motor head!!!!
Joined
Feb 13, 2001
Messages
3,471
Location
Valencia, CA,USA
Corvette
88 Convert ( SOLD ) /1973 coupe 4 speed/1964 Vert!
Your Welcome

Always glad to lend a hand!

Vig!
 

vigman

Motor head!!!!
Joined
Feb 13, 2001
Messages
3,471
Location
Valencia, CA,USA
Corvette
88 Convert ( SOLD ) /1973 coupe 4 speed/1964 Vert!
May be easier.....

The top 2 lines on the vac controller
G left ( Black )
A right ( No connection )

The black line will have mainfold vac on it. It is the source!

AND inspect your cruise...if it works the VAC supply should be OK.. but if it ...sluggy/ surgy you have a leak somewhere.

INSPECT ALL THE LINES CLOSELY!

Vig!
 

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