AC question
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From: Everyday you must choose between the pain of discipline and the pain of regret. Fredericktown, OH
AC question
I know I've seen this addressed, but I'll be darned if I can find it.
My AC blows strong and cold. Only problem is it really just blows out of the foot wells and very little to none out of the dash vents.
If I recall, there is some sort of a valve/T deal that needs replaced????
Any help is GREATLY appreciated.
My AC blows strong and cold. Only problem is it really just blows out of the foot wells and very little to none out of the dash vents.
If I recall, there is some sort of a valve/T deal that needs replaced????
Any help is GREATLY appreciated.
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From: Ashburn VA
Here's the thread:
http://forums.corvetteforum.com/show...post1551538886
There is a valve under the passenger fuel rail cover. Easy way to test it is with the car running, just pull one of the lines coming out of it and see if there's a vacuum, then replace it and pull the other line off and check that one. You're lucky if that's your problem.
I just fixed my '96 with the same exact problem not even two months ago. Please feel free to email me vsavaglio@yahoo.com if you need any help with it or have any questions about the info in that thread.
Vinnie
http://forums.corvetteforum.com/show...post1551538886
There is a valve under the passenger fuel rail cover. Easy way to test it is with the car running, just pull one of the lines coming out of it and see if there's a vacuum, then replace it and pull the other line off and check that one. You're lucky if that's your problem.
I just fixed my '96 with the same exact problem not even two months ago. Please feel free to email me vsavaglio@yahoo.com if you need any help with it or have any questions about the info in that thread.
Vinnie
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From: Everyday you must choose between the pain of discipline and the pain of regret. Fredericktown, OH
Originally Posted by VT Solo2
Here's the thread:
http://forums.corvetteforum.com/show...post1551538886
There is a valve under the passenger fuel rail cover. Easy way to test it is with the car running, just pull one of the lines coming out of it and see if there's a vacuum, then replace it and pull the other line off and check that one. You're lucky if that's your problem.
I just fixed my '96 with the same exact problem not even two months ago. Please feel free to email me vsavaglio@yahoo.com if you need any help with it or have any questions about the info in that thread.
Vinnie
http://forums.corvetteforum.com/show...post1551538886
There is a valve under the passenger fuel rail cover. Easy way to test it is with the car running, just pull one of the lines coming out of it and see if there's a vacuum, then replace it and pull the other line off and check that one. You're lucky if that's your problem.
I just fixed my '96 with the same exact problem not even two months ago. Please feel free to email me vsavaglio@yahoo.com if you need any help with it or have any questions about the info in that thread.
Vinnie
Thanks Vinnie! I'll give that a look tonight.
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From: Ashburn VA
Originally Posted by VT Solo2
I just fixed my '96 with the same exact problem not even two months ago. Please feel free to email me vsavaglio@yahoo.com if you need any help with it or have any questions about the info in that thread.
Vinnie
Vinnie
Vinnie
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From: Poop land
For some reason, the A/C out of the foot wells blow a ton harder than the vents on my 89. Is the 89 different from the others???? I'd like the opposite to have happen. My former Honda never had A/C in the footwells so I'd like the A/C to blow hard out of the dash vents and not the foot well. Now I'm starting to see all of my tiny intermittent problems from the left headlight motor spinning to the up and down function not working on my power mirror, to my windows and doors not being aligned properly to seal out the rain. But that's off this topic.....
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From: Ashburn VA
Originally Posted by k0rv3tt389
For some reason, the A/C out of the foot wells blow a ton harder than the vents on my 89. Is the 89 different from the others???? I'd like the opposite to have happen. My former Honda never had A/C in the footwells so I'd like the A/C to blow hard out of the dash vents and not the foot well. Now I'm starting to see all of my tiny intermittent problems from the left headlight motor spinning to the up and down function not working on my power mirror, to my windows and doors not being aligned properly to seal out the rain. But that's off this topic.....
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From: Everyday you must choose between the pain of discipline and the pain of regret. Fredericktown, OH
Originally Posted by VT Solo2
Oops, I just read what I wrote and it doesn't make sense. I meant I had the same problem with the defrost and floor vents. Unfortunately my problem was not that 3 way valve. If the valve is good, then the next thing to check is the box under the dash. Just turn on the car, don't start it, and with the radio off start hitting the different vent buttons. You should hear faint "clicks" from under the dash near the pedals and steering column. Anyway, I'm getting ahead of myself, good luck!
Vinnie
Vinnie
So, I went to check the vacuum on the 3-way valve. I must have a bad vacuum gauge as I couldn't get a vacuum reading from either line, so I pulled the one directly off the intake and tried there, still no vacuum reading-not even a blip. Even if there was a massive leak, I'd get something from the intake.
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From: Ashburn VA
Originally Posted by LT-4 CE
Well, I have the clicking sound from each vent option.
So, I went to check the vacuum on the 3-way valve. I must have a bad vacuum gauge as I couldn't get a vacuum reading from either line, so I pulled the one directly off the intake and tried there, still no vacuum reading-not even a blip. Even if there was a massive leak, I'd get something from the intake.
So, I went to check the vacuum on the 3-way valve. I must have a bad vacuum gauge as I couldn't get a vacuum reading from either line, so I pulled the one directly off the intake and tried there, still no vacuum reading-not even a blip. Even if there was a massive leak, I'd get something from the intake.
Vinnie
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From: Everyday you must choose between the pain of discipline and the pain of regret. Fredericktown, OH
Originally Posted by VT Solo2
That's a really good sign then, it usually means the programmer is working and it's probably a vacuum issue. You probably don't even need to use a vacuum guage. All I would do is with the motor running, just pull the two lines coming out of the t-valve, one at a time. You should hear the vacuum pretty clearly coming from the valve (if it's still good). Good luck...
Vinnie
Vinnie
In that case, I heard vacuum out of both openings when done one at a time, loud and clear. Still no air out of upper vents. Could the hoses between the t-valve and the programmer be blocked somewhere?
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From: Ashburn VA
Originally Posted by LT-4 CE
In that case, I heard vacuum out of both openings when done one at a time, loud and clear. Still no air out of upper vents. Could the hoses between the t-valve and the programmer be blocked somewhere?
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From: Everyday you must choose between the pain of discipline and the pain of regret. Fredericktown, OH
Originally Posted by VT Solo2
It's possible. But it's more likely there's a problem with the vacuum line connector to the programmer under the dash. There's a block connector for all the vacuum lines. The programmer has these rubber nipples that fit in this connector. It's possible the connector is lose, so you're losing vacuum that way. Or, as in my case, one of the rubber nipples was damaged, blocking the vacuum line, I just cut the damaged part off, good as new. I'd crawl up under the dash and see if that connector is loose, if it's not, then just pull the box out and take a look.
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From: Ashburn VA
Originally Posted by LT-4 CE
Sounds good, but where is the box?
Vinnie
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From: San Diego, Ca
Originally Posted by k0rv3tt389
For some reason, the A/C out of the foot wells blow a ton harder than the vents on my 89. Is the 89 different from the others???? I'd like the opposite to have happen. My former Honda never had A/C in the footwells so I'd like the A/C to blow hard out of the dash vents and not the foot well. Now I'm starting to see all of my tiny intermittent problems from the left headlight motor spinning to the up and down function not working on my power mirror, to my windows and doors not being aligned properly to seal out the rain. But that's off this topic.....
If the duct work checks out, check for vacuum at the solenoids which are mounted on the left side of the heater plenum. With the a/c on, the only solenoid that should have vacuum is defrost. It's vacuum hoses are tan and red. The a/c solenoid hose is blue and the heater is pink. Neither should have any vacuum. If the a/c solenoid has vacuum, disconnect to see if flow improves. If it does, the Programmer (Electronic Air) is bad or it's the Dash Controls (Manual).