1996 Heating AC Flow Problems - 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 10-12-2009, 01:30 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Oct 2009
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
burns375 is on a distinguished road
Question 1996 Heating AC Flow Problems

Hi. I have a 1996 sei. It has the automatic temp control (no *****). All the problems pertain to flow and which vents flow. The system is functioning, but not effectively. The AC is cold and the heat is hot. It seems like the fan is at a lower speed on max. A few weeks ago while on AC max, the fan was noticeably switching to a higher speed, then lower speed about every 5 minutes. This switching has only occurred only a few times. Usually after the car has been running for about 20 minutes in either AC or heat, I notice the fan jumps to a higher speed, more CFM and usually stays there.

Also the heat flow thru the middle level vents is noticably lower, while the upper and low vents flow nicely. AC flows seems to flow fine same thru all vents.

I've looked thru the forum found some good posts about similar issues that speak about bits and pieces of how to troubleshoot the issue. Is there a comprehensiv guide, like a flow chart ie check this if this then do this, if not do this??? Can anybody help me out.
burns375 is offline   Reply With Quote
Old 10-12-2009, 02:20 PM   #2
Senior Member
True Car Nut
 
Purplehazeir's Avatar
 
Join Date: Sep 2008
Location: Arlington, WA
Posts: 7,979
Thanks: 0
Thanked 1 Time in 1 Post
Purplehazeir is on a distinguished road
Default

Toddsters good with the Heat/AC issues. If he doesn't show up in this thread in a day or so to give you an assist, drop him a PM to go check out your post and see if he can provide some help.
Purplehazeir is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1992 Bonneville Heating Problems, Help needed. viniepooh General GM Chat 6 01-19-2011 02:04 PM
1996 SSEI Mass Air Flow Sensor Problems gmanjeep 1992-1999 1 08-08-2009 04:08 PM
Heating System problems... altrace 2000-2005 7 01-01-2009 09:49 PM
Heating Problems on 2000 SSEI JOEGTO 2000-2005 4 12-11-2006 10:03 PM
'92 SSEI heating system, low air flow TelePlayer 1992-1999 2 07-28-2003 09:44 PM


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 12:39 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.