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Air cond. problem?

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Old Oct 10, 2008 | 08:19 PM
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Default Air cond. problem?

My 1996 Vette auto LT1 with manual climate control. When the air-conditioning is switched on the air is blowin thru the bottom vents. The air should be blowin thru the top vents. I replaced a check valve that was under the passenger side fuel rail cover. The air still blows
only thru the bottom vents. Anyone know how too solve this problem??
The vette only has 17k miles.
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Old Oct 11, 2008 | 04:30 PM
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No one ever have this problem?
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Old Oct 11, 2008 | 05:39 PM
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Originally Posted by VetteDriven
No one ever have this problem?
Do a search on a/c programmers. Something to do with the vacumn lines collasping at the nipple of the programmer. Sori can't be more help.
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Old Oct 11, 2008 | 07:44 PM
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Originally Posted by Red Dwarf
Do a search on a/c programmers. Something to do with the vacumn lines collasping at the nipple of the programmer.


Here's a link with pictures showing how to fix this problem. It fixed the problem that I had on my 96 with the air only blowing out of the defog and the floor vents only.

http://forums.corvetteforum.com/show...=ac+controller
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Old Oct 11, 2008 | 09:27 PM
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Originally Posted by Gary96


Here's a link with pictures showing how to fix this problem. It fixed the problem that I had on my 96 with the air only blowing out of the defog and the floor vents only.

http://forums.corvetteforum.com/show...=ac+controller
Gary96...was yours a manual or electronic. I missed that on his first post. Wondering if the manual & elect use the same type programmer?
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Old Oct 11, 2008 | 09:33 PM
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Wow its hard to beleive my air is acting up after only 17k miles.
Seems like a real pain to fix.
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Old Oct 11, 2008 | 11:36 PM
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Originally Posted by Red Dwarf
Gary96...was yours a manual or electronic. I missed that on his first post. Wondering if the manual & elect use the same type programmer?
Mine is electronic so I don't know if they are the same or not.
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Old Oct 12, 2008 | 10:31 AM
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Originally Posted by Gary96
Mine is electronic so I don't know if they are the same or not.

Thanks.
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Old Oct 13, 2008 | 09:15 PM
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Could it be something else thats would cause the air to blow out
the bottom vents?
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Old Oct 13, 2008 | 10:56 PM
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Even though your system is manual and mine is electronic, it sounds like you have the same problem that I had. My air would only blow out the floor and the defrost only; no air would come out the instrument panel vents. It was a vacuum problem like illustrated in the link I gave. I didn't want to tackle the job myself, so I took it to the dealer. They said that it was vacuum problem and fixed it without parts. From what I've read here, this is a common problem on the later model C4 vettes, especially the 96's.
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Old Oct 15, 2008 | 02:15 PM
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I just thought it might be something simple. I really dont want to
take my vette to the dealer.
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Old Oct 15, 2008 | 02:23 PM
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It is simple, check out the link.
You can clip the nipples back or use some brass tubes (get 'em at Home Depot or any hobby shop).

I sure wouldn't take the car to a shop for this easy repair.
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Old Oct 15, 2008 | 03:03 PM
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Originally Posted by Digital Disaster
It is simple, check out the link.
You can clip the nipples back or use some brass tubes (get 'em at Home Depot or any hobby shop).

I sure wouldn't take the car to a shop for this easy repair.
Great link I will look out for this problem if it ever shows up on my pops 96CE LT4!! Must have been a bear to get in there DD
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Old Oct 20, 2008 | 08:15 PM
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On a scale of one to ten. Ten being the most difficult.
How would you rate trying to fix this problem?
Im not a mechanic, just the basics, oil changes and plugs.
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