1997 wont blow out the center a/c vents, WHY? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-30-2005, 09:53 PM   #11
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Oh..hey..after working on Randmans 97...the tank is under the front of the ps fender...odd location.

Did you get this fixed?
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Old 05-30-2005, 10:44 PM   #12
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No not yet. I have found the tank and the line. The line is hidden by alot of the wire covering. The big black bendy wire covering that runs throughout the engine compartment. The line comes out one place and has the black hose instead of the purple hose. Then it goes back into the wire organizer again. I am having difficulty in tracing it to the engine. And Im afraid to opwn up the wire organiser to much. Not sure what Im going to do yet. I think Ill pull the wire organizer off a littlw ways and see if there is a break.
My suspision is, that they use the purple hose inside of the wire organizer and the black rubber hose outside of the wire organizer. If that is the case I will begin to replace all the black rubber hose and see what happens.

Does anyone know where the vacuum line connects to the engine. And... what is the tank with vacuum lines on the drivers side in the wheel well under the intake thing.

whew,
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Old 05-30-2005, 11:06 PM   #13
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The vacuum line is purple only after it goes through the firewall so it is all black under the hood. The easiest explanation for your problem is a disconnected line either at the tank or it'* source. Things are pretty well protected within the loom. The manual isn't very descriptive when it comes to the location of the source but there is a line labled "To Accessory" that connects right where the brake booster line does on the engine. The booster line is very easy to find as it'* the largest diameter vacuum hose in the car (about 7/8" diameter) and goes from the top of the engine to the brake booster on the firewall.

If I recall correctly, there is also a check valve right near the grommet mentioned above. Before you dig and extract the entire vacuum line, check the visable connections. You can also start the car and listen very closely to the inside of the glovebox. The black to purple connection is there. Listen for a hissing sound.
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Old 05-31-2005, 08:51 AM   #14
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As well....maybe save yourself alot of effort. I went to Sears and bought a vacuum gauge when I had this problem. While mine was an easy find I didn't return the gauge. The more specialized tools you have usually the easier the job. That way you could connect it at the tank to the source feed line...if you have vacuum there, then connect just coming off the tank.. and then whereever you can find a spot to connect there after.

I have an odd feeling your tank took one for the team...or a hose cracked...it'* something small and easy most likely.
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Old 06-03-2005, 06:19 PM   #15
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No luck yet, still trying to track it down. How do I get pictures on the site. Could someone direct me to some directions.
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Old 06-03-2005, 07:29 PM   #16
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Pontiac Bonneville Forum - Official home of the Pontiac Bonneville Club. - FAQ
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Can I post Images?
Images can indeed be shown in your posts. However, there is no facility at present for uploading images directly to this board. Therefore you must link to an image stored on a publicly accessible web server, e.g. http://www.some-unknown-place.net/my-picture.gif. You cannot link to pictures stored on your own PC (unless it is a publicly accessible server) nor to images stored behind authentication mechanisms such as Hotmail or Yahoo mailboxes, password-protected sites, etc. To display the image use either the BBCode [img] tag or appropriate HTML (if allowed).

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Old 06-08-2005, 11:35 AM   #17
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Man ya'll its getting hot down hear in Texas. Can't find that problem still. I called some of my mechanic friends and they are saying that my sytem problem might be a control motor and not a vaccum line. I can't find a hissing line. I tore up the dash and still no mystery vaccum line. Are we sure that these doors that direct the air are run on vaccum lines. My car has the electronic climate control not the manal *** type?

Ya'll Rock Thanks for everything so far. I appriciate this web site.
J
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Old 06-08-2005, 12:42 PM   #18
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The temp control is a motor (air mix actuator) but the diverters are vacuum.

At this point, you may want to remove the HVAC programmer. You can disconnect the colored vacuum lines from the inside and put a vacuum gauge on the purple line. That'* the source. If it is determined that you have sufficient source vacuum, then it'* on to testing the little actuators in the programmer.

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Old 06-10-2005, 12:27 AM   #19
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any luck yet?
I have the same problem as you and I can't find the fix yet!
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Old 06-10-2005, 12:57 AM   #20
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I added some new info to Nick'* thread that might also be helpful for James.


https://www.gmforum.com/t233983/

Last edited by Danthurs; 01-05-2009 at 02:37 PM.
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