AC wont come out of panel vents! - 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.

Reply
 
 
 
Thread Tools Search this Thread
Old 09-06-2003, 01:25 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Sep 2003
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
laff66 is on a distinguished road
Default AC wont come out of panel vents!

This was an on/off problem for a while, but is full time now. Cold air only comes out defrost and floor vents. I finally took it to the dealer and they said it was the controller, but I'm not sure if they were talking about the unit with the digital readout or the one on the pass side floor with the vacuum lines. The advisor said it was the digital part, and wanted $800!!!!!! I have tried to get to the vacuum controller, but cant, I've also tried to find an actuator to manually change the air flow.... no luck. I really don't want to buy a $650 part for a car with 108,000 miles on it, and I don't really trust the dealer that it will fix my problem. Any ideas? Used part, similar experiences, etc??
laff66 is offline   Reply With Quote
Old 09-06-2003, 01:37 PM   #2
Senior Member
Posts like a Corvette
 
Join Date: Jul 2003
Location: Ardmore, Oklahoma
Posts: 1,590
Thanks: 0
Thanked 0 Times in 0 Posts
big_boss2010 is on a distinguished road
Default

Normally what happens in these situations is the unit in the dash goes out that electronically changes the way the air flows when you turn the ****. I would suggest going to a local salvage yard and picking up a used one and putting it in.
big_boss2010 is offline   Reply With Quote
Old 09-06-2003, 01:39 PM   #3
Senior Member
Posts like a Turbo
 
Join Date: Apr 2003
Location: Arkansas
Posts: 409
Thanks: 0
Thanked 0 Times in 0 Posts
parallelcircuits is on a distinguished road
Default

Please fill out you signature so we will know what kind of car you have.

Is this a digital climate control or the manual one (with the three ****)? Sounds like a vacuum problem to me. Pop you hood and listen for a little sucking hissing sound. You might have a vacuum leak. I am not really sure how the digital controls work but a vacuum leak would cause this in the manual controls.
parallelcircuits is offline   Reply With Quote
Old 09-06-2003, 01:43 PM   #4
Member
Posts like a V-Tak
 
Join Date: Dec 2002
Location: Tel Aviv, Israel
Posts: 73
Thanks: 0
Thanked 0 Times in 0 Posts
uri14979 is on a distinguished road
Default

The actuator is kinda hard to get to, especially when a passenger airbag is present.

But your problem doesn't sound actuator related at all - unless there'* an error code reported by the climate control headunit (does the display blink for a while after the car is started?).

Seems to me that a vacuum line got disconnected somewhere. Check all vacuum lines in the engine compartment first, and then the pink one that goes around the ECM, right above the passenger feet, and then to the actuator (you'll need to remove the right insulation panel, the plastic panel above the passenger feet). All the lines draw vacuum from the throttle body. From there it goes to a vacuum tank that'* between the brake booster and the relay center on the firewall, and then to all the accessories.

You can definitely manually change the air flow by playing with the vacuum lines that controls the vent doors, once you get to the actuator.

Hope this helps
uri14979 is offline   Reply With Quote
Old 09-06-2003, 03:15 PM   #5
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Sep 2003
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
laff66 is on a distinguished road
Default

Mine is the electronic controller. I have tried to get to the pink vacuum line, but its behind the metal structure thats behind the glove box. I called many salvage yards, and nobody had the electronic controller. I'll check the vacuum lines under the hood, but I haven't found any problems there before. Also, there is no blinking display on startup.
Here'* a good one: We took this car up to Beaver Creek, CO over Christmas, and right when we got up in the mountains at 11pm in a raging snowstorm, the defroster vents SHUT OFF COMPLETELY, and started blowing through the panel vents!!!! It hadn't done that in a year! Talk about mad.....
laff66 is offline   Reply With Quote
Old 09-06-2003, 10:10 PM   #6
Senior Member
True Car Nut
 
Join Date: Sep 2002
Posts: 3,392
Thanks: 0
Thanked 0 Times in 0 Posts
fuddyduddy121 is on a distinguished road
Default

That last problem is sort of strange, and does sound like a programmer. But first you have to ensure vacuum at the programmer.
fuddyduddy121 is offline   Reply With Quote
Old 09-06-2003, 10:23 PM   #7
Senior Member
Posts like a Turbo
 
Join Date: Mar 2003
Posts: 419
Thanks: 0
Thanked 0 Times in 0 Posts
95neongirl is on a distinguished road
Default

Yes look under the hood for a small vacum line near the brake booster that was my problem when the air was not blowing through the vents!
95neongirl is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Key wont come out... trae00sle Pontiac 6 05-24-2010 05:28 AM
come to the chat room, come to the chat room, come come come wjcollier07 Lounge 12 11-23-2006 10:43 PM
Driveaxle removal, They wont come OUT crzydmnd72 Buick 1 07-31-2006 09:30 AM
1997 wont blow out the center a/c vents, WHY? james tharp 1992-1999 134 08-08-2005 04:19 PM
come out come out..... ratmfan2118 Lounge 4 06-16-2004 03:20 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:51 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.