98 Buick Park Ave A/C air discharge at defroster and floor only. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Buick When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-04-2011, 10:06 PM   #1
Junior Member
Thread Starter
 
Blane's Avatar
 
Join Date: Jul 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Blane is on a distinguished road
Default 98 Buick Park Ave A/C air discharge at defroster and floor only.

I have a 1998 Buick Park Ave Ultra. HVAC climate control. A/C is cold but only discharges at the defroster and floor registers. No matter what position I select, Auto, or driver selected it still won't discharge through the dash registers. There has been a couple of times that when I first start the car that the air will come out of the dash registers but after about a minute it changes and goes back to the defroster and floor registers. I had one incident today where going down the road that it started coming out of the dash registers for just a few seconds then went back to the defroster and floor registers yet once again. I'm wondering if this could be caused from one of the actuator doors not positioning properly and if so which one could it be? Any help would be great. I do know that the actuator door don't work by vacuum but by a DC motor, so any remarks about checking the vacuum wound not help. Thanks
Blane is offline   Reply With Quote
Old 07-05-2011, 09:31 AM   #2
Senior Member

True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,804
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

Are you absolutely certain your system is not vacuum driven? Bonneville is vacuum driven up to MY 2000.

Air out the floor and defrost with no change when you use the controls to direct air throught the vents is the default mode when the the HVAC control unit has failed. You probably need a "new" HVAC control unit. You can pick up a used one for a fairly reasonable price.

Check the vacuum thing first though.
2kg4u is offline   Reply With Quote
Old 07-05-2011, 09:43 AM   #3
Junior Member
Thread Starter
 
Blane's Avatar
 
Join Date: Jul 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Blane is on a distinguished road
Default

My car is a 1998 Buick Park Ave and the electronic HVAC, climate control, dual zone A/C has all of the doors operated by a electrically activated DC actuator. Thank you for the info on the replacement of the HVAC control unit. I was not aware that air out the floor and defrost with no change when you use the controls to direct air throught the vents is the default mode. Once again thank you!
Blane is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1995 Park Ave. heater problems (blower high speed only) SkiWhiz Buick 4 03-05-2012 01:43 PM
98 Buick Park Ave Ultra 3800 Series II Input and Output Speed Sensor locations undertakerman Buick 10 09-12-2011 08:19 AM
2003 Buick Park AVe tranny fluid and filter chg ? goldfinger22 Buick 1 02-24-2011 10:43 PM
00' Bonneville SE No Dash Vents, Only Floor and Defroster RuinedAng3l 2000-2005 8 01-08-2010 01:22 AM
1997 Bonneville SSE - Air Conditioning Discharge Problem jpb100 1992-1999 2 06-24-2006 12:11 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 09:13 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.