[UPDATE]HVAC Vacuum Issues (no progress)
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Originally Posted by Evil-Twin
if you look at my tech tip on replacing the oil pressure sensor you will see my post on that small 1/8 in vacuum line... it plugs into an L shaped black rubber nipple.,. on the back of the intake manifold... this vacuum line is used to control the ac doors... it goes to a vacuum manifold.. if this line is removed your ac doors wont work..
) I just wish I could get to it without removing the manifold 
Thank you everyone for the info. Now I just need to remove the manifold and lengthen that line and plug it back in
Good thing is, at least the car cools off....just so happens it comes out ALL vents no matter which mode I choose...... 
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From: Deerfield beach Fl
Well here in Florida it wasn't cooling off enough for me. For one thing, without the vacuum, it will not go into recirc mode, and for another, without it blowing straight at me through the vents, it doesn't cool off enough.
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Awesome picture. Thank you. Yep I need to get in there and hook it up 
Funny.......because on the FAST 90mm manifold I have in the garage that little connection is on the bottom back corner (passenger side) of the manifold...........it is so easy to get to and see...thanks again.
Funny.......because on the FAST 90mm manifold I have in the garage that little connection is on the bottom back corner (passenger side) of the manifold...........it is so easy to get to and see...thanks again.
Originally Posted by runamuk
It sounds like you have it figured out but here is a picture of where the line hooks up at.
Last edited by Buckmaster; Jul 25, 2004 at 07:38 PM.
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I hear you. Even on HOT days here I like it on the "vents" only and have it blow right on my face........
Originally Posted by robl45
Well here in Florida it wasn't cooling off enough for me. For one thing, without the vacuum, it will not go into recirc mode, and for another, without it blowing straight at me through the vents, it doesn't cool off enough.
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Keith
If you remove the PCV hoses you might have an easier time getting back there and getting a hose on that fitting without removing the manifold.
Runamuck
GREAT picture! Any chance you could post it with out the BIG RED CIRCLE??
Thanks
Bill Curlee
If you remove the PCV hoses you might have an easier time getting back there and getting a hose on that fitting without removing the manifold.
Runamuck
GREAT picture! Any chance you could post it with out the BIG RED CIRCLE??
Thanks
Bill Curlee
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Originally Posted by Bill Curlee
Keith
If you remove the PCV hoses you might have an easier time getting back there and getting a hose on that fitting without removing the manifold.
Runamuck
GREAT picture! Any chance you could post it with out the BIG RED CIRCLE??
Thanks
Bill Curlee
If you remove the PCV hoses you might have an easier time getting back there and getting a hose on that fitting without removing the manifold.
Runamuck
GREAT picture! Any chance you could post it with out the BIG RED CIRCLE??
Thanks
Bill Curlee
Funny you mention this. I was just off to the garage to try and do that. But I wanted to see that picture one more time before going out there so I checked here. I am off to try that....hopefully it works. Thanks again.....
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I've been away from this thread for a couple days, but it would seem like you've got some good help from Shirl, Evil and Bill on this. Glad to hear it! 
Hey, look at it this way. You are now more familiar with some of the basics of your HVAC vacuum system, albeit the "hard" way.
Sometimes the school of hard knocks is a good teacher. At least it has been to me a number of times in the past.
Robert
Hey, look at it this way. You are now more familiar with some of the basics of your HVAC vacuum system, albeit the "hard" way.
Sometimes the school of hard knocks is a good teacher. At least it has been to me a number of times in the past.
Robert
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Originally Posted by LoneStarFRC
I've been away from this thread for a couple days, but it would seem like you've got some good help from Shirl, Evil and Bill on this. Glad to hear it!
Hey, look at it this way. You are now more familiar with some of the basics of your HVAC vacuum system, albeit the "hard" way.
Sometimes the school of hard knocks is a good teacher. At least it has been to me a number of times in the past.
Robert
Hey, look at it this way. You are now more familiar with some of the basics of your HVAC vacuum system, albeit the "hard" way.
Sometimes the school of hard knocks is a good teacher. At least it has been to me a number of times in the past.
Robert
