A/C 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 07-16-2010, 12:36 PM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2009
Posts: 291
Thanks: 0
Thanked 0 Times in 0 Posts
jdaniels is on a distinguished road
Default A/C Problems

First and foremost, I only get air out of the floor and defrost vents(and a small air flow out of the one in the center panel, towards the backseat). It'* been way too hot/rainy lately for me to poke around like I've been reading about, plus I don't have access to any jacks or stands, other than the carjack for changing the tire. I believe my issue has to do with something being unplugged or a door being closed, because the electronic system says air is coming out of the front vents, but it isn't.

However, starting yesterday I get an intense vibration in the pedals when the air is running. Turn it off, vibration stops. Ideas?
jdaniels is offline   Reply With Quote
Old 07-16-2010, 02:03 PM   #2
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

On the vent location of flow. Start by checking the vacuum line that hooks to the motor at the back of the manifold. Easy way to find it is to follow the hose from the brake booster to the engine. It'* on the same fitting that hooks to the engine. If it'* not that, then it'* likely the HVAC programmer nipples being collapsed. Some vacuum line and you could fix this up quick.

Vibration... Motor mount? You don't give us a lot to go on for the diagnosis.
BillBoost37 is offline   Reply With Quote
Old 07-16-2010, 03:54 PM   #3
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2009
Posts: 291
Thanks: 0
Thanked 0 Times in 0 Posts
jdaniels is on a distinguished road
Default

Vibration, you know as much as I know at the moment...air on, I feel the vibration in the pedals. Air off, I don't feel a vibration.
jdaniels is offline   Reply With Quote
Old 07-16-2010, 08:41 PM   #4
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,647
Thanked 999 Times in 775 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Maybe the blower fan is off balance. It is secured to the firewall just like the brake pedal is.

HVAC, I'm with Bill on this one. Check for collapsed lines behind the controller.
Mike is offline   Reply With Quote
Old 07-17-2010, 03:12 AM   #5
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2009
Posts: 291
Thanks: 0
Thanked 0 Times in 0 Posts
jdaniels is on a distinguished road
Default

With my year, I have to jack the car up to get to those lines, right?
jdaniels is offline   Reply With Quote
Old 07-17-2010, 08:12 AM   #6
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,647
Thanked 999 Times in 775 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

No sir. All of your lines are behind the dash board. I believe they are all accessible through the glove box and behind the climate control head. I know we had a write up around here somewhere....
Mike is offline   Reply With Quote
Old 07-17-2010, 11:49 AM   #7
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2009
Posts: 291
Thanks: 0
Thanked 0 Times in 0 Posts
jdaniels is on a distinguished road
Default

A link to a writeup would be great...having a hard time right now.
jdaniels is offline   Reply With Quote
Old 07-17-2010, 02:35 PM   #8
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2009
Posts: 291
Thanks: 0
Thanked 0 Times in 0 Posts
jdaniels is on a distinguished road
Default

Okay, removed glovebox only to find out I didn't need to, lol.

Stuck at the round thing, where all the colored lines plug into..how do I get that down to where I can see if nipples are broken?
jdaniels is offline   Reply With Quote
Old 07-24-2010, 11:52 AM   #9
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2009
Posts: 291
Thanks: 0
Thanked 0 Times in 0 Posts
jdaniels is on a distinguished road
Default

Still wanting to find out how to get the round thing the lines connect to off. It'* the piece right below the dash.
jdaniels is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
problems after problems samkivel 2000-2005 3 03-05-2008 01:14 PM
problems after problems samkivel 2000-2005 2 09-25-2007 01:54 PM
Problems Problems..... jbbiggs 1992-1999 10 11-12-2005 11:21 AM
Problems, Problems, Problems... swartlkk 2000-2005 2 11-04-2005 08:57 PM
problems, problems, problems big_boss2010 1992-1999 15 04-25-2004 09:05 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 12:50 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.