a/c problem part #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.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-12-2006, 09:18 AM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Aug 2005
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
cjpenny89 is on a distinguished road
Default a/c problem part #2

Ok I hope this will help me out this is what I have I found outso far with the help of sonma_zr2 maybe some one can help me out further on what to do next.

With out jumpering any of the sensors key in run postion engine not running I take and ground the ground wire on the relay the one that gets the signal from the pcm and it engages the clutch. This also works with the engine running. So now I know the circut is working and I am not getting the correct signal from the PCM to turn it on.

What can I do know to narrow it down?
Bad PCM?
Bad sensor?

This is what I know about the switches.
cycle switch up on the accumulator.

Switch between the radiator and the pump if you jumper the connector it tunrs on the fans

There is a 2 plug connector on the back of my a/c pump but I do not know what it it does.

then of course the power plug for the clutch coil.

Which switches could be bad or which ones do I need to jumper to by pass for low to no coolant?

Could my a/c and heater controler in the car not be telling the computer to turn the air on?

anyone know anything else for me?
Thanks
cjpenny89 is offline   Reply With Quote
Old 06-12-2006, 10:29 AM   #2
Senior Member
True Car Nut
 
Join Date: Jan 2005
Location: Montevideo, MN MWBF '05, '06, '07 WCBF '06 '07 survivor
Posts: 3,882
Thanks: 0
Thanked 0 Times in 0 Posts
sonoma_zr2 is on a distinguished road
Default

this is the same problem we had with Nate'* 95. We stopped at this point not knowing how to procced. I think he actually had pressure in the system, just couldn't make the damn thing run. even forcing the ac clutch while engine running still wouldn't cool.
sonoma_zr2 is offline   Reply With Quote
Old 06-12-2006, 02:19 PM   #3
Senior Member
True Car Nut
 
GAMEOVER's Avatar
 
Join Date: Aug 2003
Location: Racine Wi
Posts: 5,146
Thanks: 0
Thanked 0 Times in 0 Posts
GAMEOVER is on a distinguished road
Default

bad pressure switch is very common
GAMEOVER is offline   Reply With Quote
Old 06-12-2006, 02:22 PM   #4
Senior Member
True Car Nut
 
Join Date: Jan 2005
Location: Montevideo, MN MWBF '05, '06, '07 WCBF '06 '07 survivor
Posts: 3,882
Thanks: 0
Thanked 0 Times in 0 Posts
sonoma_zr2 is on a distinguished road
Default

Quote:
Originally Posted by GAMEOVER
bad pressure switch is very common
on Nate'*, we had 5v after the last switch, so they checked out ok.
sonoma_zr2 is offline   Reply With Quote
Old 06-12-2006, 02:36 PM   #5
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Aug 2005
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
cjpenny89 is on a distinguished road
Default

Well I am getting 12 volts to the line switch that is between the compressor and the radiator but that one turns on the fan?

I am guessing that one is not the low pressure switch?

Is the low pressure switch on the back of the compressor?
cjpenny89 is offline   Reply With Quote
Old 06-12-2006, 02:43 PM   #6
Senior Member
True Car Nut
 
Join Date: Jan 2005
Location: Montevideo, MN MWBF '05, '06, '07 WCBF '06 '07 survivor
Posts: 3,882
Thanks: 0
Thanked 0 Times in 0 Posts
sonoma_zr2 is on a distinguished road
Default

Quote:
Originally Posted by cjpenny89
Well I am getting 12 volts to the line switch that is between the compressor and the radiator but that one turns on the fan?

I am guessing that one is not the low pressure switch?

Is the low pressure switch on the back of the compressor?
I would have to agree with you that you are measuring the wrong switch. I'll look at my 92 tonight, right now all I can visualize is a 95 (should be the same ?)
sonoma_zr2 is offline   Reply With Quote
Old 06-12-2006, 09:36 PM   #7
Junior Member
Posts like a Ricer Type-R
 
Join Date: Apr 2005
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
nat1ve is on a distinguished road
Default !!Same Problem!!

Sry for Interuppting Guys, My 92 sse recently did sumthinng like this.... One day it was working just nice and dandy then all of a sudden when I turned it on no air came out at all cold or hot. I just need to know is this something I can fix on my own or have to get a whole new part in order for it to work again.....
nat1ve is offline   Reply With Quote
Old 06-13-2006, 12:31 AM   #8
Senior Member
Posts like a Camaro
 
Join Date: Nov 2002
Posts: 857
Thanks: 0
Thanked 0 Times in 0 Posts
Bugsi is on a distinguished road
Default Re: !!Same Problem!!

Quote:
Originally Posted by nat1ve
Sorry for Interrupting guys, my 92 SSE recently did something like this.... One day it was working just nice and dandy then all of the sudden when I turned it on no air came out at all, cold or hot. I just need to know is this something I can fix on my own, or do I have to get a new part in order for it to work again.....
FYI, don't threadjack, start a new question for your problem, even if it is similar to what someone else is experiencing.

(Back to regular thread programming. . .)
Bugsi is offline   Reply With Quote
Old 06-14-2006, 09:40 AM   #9
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Aug 2005
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
cjpenny89 is on a distinguished road
Default

all my switches show 12 volts not 5 volts so what is going on?
cjpenny89 is offline   Reply With Quote
Old 06-14-2006, 11:22 AM   #10
Senior Member
True Car Nut
 
Join Date: Oct 2005
Location: Central Florida
Posts: 7,030
Thanks: 0
Thanked 0 Times in 0 Posts
lash is on a distinguished road
Default

Since we're not getting to the bottom of this, I'd like to suggest you find a local A/C shop and get it tested. Down here, most places will charge you a $25 diagnostic charge if you don't get it repaired there. At some point it makes sense to pay that much in order to find out what is really wrong, IMO.

You can then do any repairs you need from there.
lash is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Tranny part broken. need part # steveden 1992-1999 3 05-19-2008 10:32 PM
I can't find out what the name or part # for a part I broke Randy Edens 1992-1999 6 11-12-2006 02:55 AM
Part Numbers - Part 2 llBlazin_llLo 1992-1999 7 12-08-2005 05:40 PM
Need Plug Wire Part Number and NGK Plug Part Number!! josho66 2000-2005 11 05-29-2005 01:06 PM
Problem with 1993 Bonney, part 2 (+) DiamondRussia 1992-1999 1 04-14-2003 02:44 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 10:12 PM.


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.