1996 A/C problem
Thread Starter
Safety Car
Joined: Feb 2002
Posts: 4,806
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From: Belle Chasse La
1996 A/C problem
The A/C in my 1996 CE has never blown consistently through the dash vents, but
it would at least sporadically. Now, it seems it only comes through the
defroster and the floor vents.
Any thoughts on how to fix this?
it would at least sporadically. Now, it seems it only comes through the
defroster and the floor vents.
Any thoughts on how to fix this?
Racer
Joined: Mar 1999
Posts: 421
Likes: 0
From: Austin Texas
There's a thread going in Tech/Perf about a '96 with the same
problem (AC Problem). Very common on late C4's. Just don't let anyone tell you it's a bad t-valve around the passenger's side
fuel rail. It's in the dash on '96s.
Good Luck..................MickyD
problem (AC Problem). Very common on late C4's. Just don't let anyone tell you it's a bad t-valve around the passenger's side
fuel rail. It's in the dash on '96s.
Good Luck..................MickyD
Thread Starter
Safety Car
Joined: Feb 2002
Posts: 4,806
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From: Belle Chasse La
Originally Posted by Micky Davis
There's a thread going in Tech/Perf about a '96 with the same
problem (AC Problem). Very common on late C4's. Just don't let anyone tell you it's a bad t-valve around the passenger's side
fuel rail. It's in the dash on '96s.
Good Luck..................MickyD
problem (AC Problem). Very common on late C4's. Just don't let anyone tell you it's a bad t-valve around the passenger's side
fuel rail. It's in the dash on '96s.
Good Luck..................MickyD
Thread Starter
Safety Car
Joined: Feb 2002
Posts: 4,806
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From: Belle Chasse La
Originally Posted by Eric 96
I'm sure Greg can help ya!!!
If you want to bring it to Destin, that's where I'll be this weekend!!!
If you want to bring it to Destin, that's where I'll be this weekend!!!
I asked Dennis and Tim....I'll let you know
Last edited by 96 Collector Edition; Jun 20, 2005 at 06:41 PM.
Drifting
Joined: May 2005
Posts: 1,336
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From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
That's funny. I own a 96 CE coupe that I purchased new. The vacuum t-valve sits on the passenger side between the fuel rail and the valve cover. In fact, about a year ago, I had to replace the valve because part of it disintegrated due to the heat. If I remember correctly, the part from GM cost about $6.
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Safety Car
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From: MANDEVILLE, LA La
Originally Posted by TorchRedlt4man
That's funny. I own a 96 CE coupe that I purchased new. The vacuum t-valve sits on the passenger side between the fuel rail and the valve cover. In fact, about a year ago, I had to replace the valve because part of it disintegrated due to the heat. If I remember correctly, the part from GM cost about $6.
Thanx Bert & Guys
Burning Brakes
Joined: Dec 2002
Posts: 758
Likes: 0
From: Foley, AL
I have the same exact problem with my 96 Coupe.
Is this something I can tackle myself?
Or as a newbie Corvette owner, and not knowing a darn thing about them, take it some one to fix?
Thoughts?
colt
Is this something I can tackle myself?
Or as a newbie Corvette owner, and not knowing a darn thing about them, take it some one to fix?
Thoughts?
colt
Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
It wouldn't hurt anything to check that valve under the rail cover. However the design of the programmer vacuum fittings is poorly conceived. More than likely your gonna find the vacuum header at the programmer is about to fall off.
Intermediate
Joined: Jun 2004
Posts: 38
Likes: 0
From: Sioux City IA
A/C problem
When my t fitting out near the right fuel rail failed due to disintegration, all my vents would work properly, except when I stepped on the gas, they all shut off. It was about $6 at the chevy dealer.
Instructor
Joined: Dec 2004
Posts: 101
Likes: 1
From: NRH TX
I also own a 96 that has this problem. It takes a minute or two after you push the button before the air starts to blow out of the dash, but it eventually does. I replaced the t-valve under the fuel rail cover, but it didn't help at all. Does anyone have detailed instructions of how to access the under-dash system? I'd attempt to tackle it with some details!
Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
Instructor
Joined: Aug 2004
Posts: 104
Likes: 0
Had same problem
I fought this problem for 2 years including a trip to the dealer for $700 who replaced the AC controller etc. Problem was back in 6 months. Turns out the vacuum connector to the AC programmer was loose--this is a 7 line connector and is supposed to have a push on fastner in the center that goes over a treaded stud on the mating part on the AC programmer which the great dealer did not put on. Believe it or not the treaded top on a sparkplug is the same thread. I ground a hex on the spark plug top to fit a small socket and tightened it down on the stud and have not had the problem again. It is unbelievably difficult to get at. The GM manual shows a picture in Book one page 1B-13. I also had to replace the check valve assembly on the side of the injection plenum which is the source of vaccum.
Melting Slicks
Joined: Jun 2003
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From: The Clem MI
CI 7-8 Veteran
St. Jude Donor '03-'04-'05-'06-'07
Go Figure . . . I've go the same problem! 96LT1, NO air through top vents, only blowing through the bottom and the defrost vents. I'd really like to know the EXACT fix for this, so here's a TTT on this thread. What is the true FIX? 
Originally Posted by 96 Collector Edition
will be changing the T-connector soon....will see if that solves the problem 
Melting Slicks
Joined: Jun 2003
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From: The Clem MI
CI 7-8 Veteran
St. Jude Donor '03-'04-'05-'06-'07
ttt . . . still waiting. I've been reading lots of possible causes/fixes, but have not read where anyone has actually fixed this problem and how to fix it.