92 - AC not accepting recharge - 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 05-21-2004, 07:34 PM   #1
Junior Member
Thread Starter
 
Join Date: May 2004
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
chrisc is on a distinguished road
Default 92 - AC not accepting recharge

Hi-

I have a 92 SE and am converting over to 134a.
Have flushed system, put on adapters and went to
fill and the system and it is not accepting the refrigerant into
the system. I hook up the bottle with the gauge and it
reads danger level.

Went to my local auto parts store, they checked fittings and they
said the gauge is reading the bottle pressure, the refrigerant is
not getting into the system... and think that my
ac compressor is not engaging.... which they think has to happen
so the stuff can cycle through the system.

Checked all fuses.. they are o.k.
My manual says something about a relay but I have no idea
where that is or how to find it... or if that is what is causing the
problem.

Anyone had this problem or can give direction?.
Thanks
chrisc is offline   Reply With Quote
Old 05-21-2004, 09:36 PM   #2
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

Is there a problem with the fitting on the low side? Why would it not accept refrigerant? Do you have electronic climate control?
fuddyduddy121 is offline   Reply With Quote
Old 05-22-2004, 10:21 AM   #3
Junior Member
Thread Starter
 
Join Date: May 2004
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
chrisc is on a distinguished road
Default

fitting was checked.. seems to be working.

don't have electronic climate control.
chrisc is offline   Reply With Quote
Old 05-22-2004, 10:38 AM   #4
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

Yes, in order for the refrigerant to get into the system, the compressor has to draw the low side down far enough to accept the charge. Look under the hood. The A/C relay is the one closest to the accumulator on the firewall.
fuddyduddy121 is offline   Reply With Quote
Old 05-22-2004, 12:10 PM   #5
Junior Member
Thread Starter
 
Join Date: May 2004
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
chrisc is on a distinguished road
Default

found the relays. can't seem to remove it though... but
am working on it.

I have started my car after attempting to remove it and
the air cond. compressor now kicks in about 5 or 6 times, each time
for a period of about 5 seconds, and then it stops.

I thought maybe my wiggiling the relay might have done something...
which leads me to ask that if the compressor is now kicking in (briefly), does
that mean that it is definetly the relay ... or could it be something else?

tried to put refrigerant into the system, and it took a little (very, very, very little) and
then it stopped. Am I correct in thinking that when the compressor kicked
in it made enough room for a little bit more refigerant?

thanks for the help..
chrisc is offline   Reply With Quote
Old 05-22-2004, 12:21 PM   #6
Junior Member
Thread Starter
 
Join Date: May 2004
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
chrisc is on a distinguished road
Default

just tried starting the car again and turned the ac on and the
compessor did not kick in... so now nothing is happening with
the compressor...

puzzleing.....
chrisc is offline   Reply With Quote
Old 05-22-2004, 01:18 PM   #7
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

You have to charge the refrigerant with the A/C on. If you have a code in the PCM for low refrigerant, then you are going to have to disconnect the battery for a minute to clear the code. Otherwise the compressor won't turn at all.

Do you have pressure gauges and a vacuum? Are you familiar with jumping the terminals at the low pressure switch?
fuddyduddy121 is offline   Reply With Quote
Old 05-22-2004, 02:15 PM   #8
Senior Member
True Car Nut
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Thanks: 0
Thanked 1 Time in 1 Post
bill buttermore is on a distinguished road
Default

It is normal for a system that is low or out of refrigerant, for the compressor to cycle briefly as you described. As the system fills up, the compressor will run for increasingly longer times until it runs pretty much continuously when fully charged.

As Fuddy said, make sure the AC is on high. I find that filling on the suction side when sitting can be a very slow process, but if you wire up the can in a safe spot in the engine compartment, so that you can close the hood and drive the car, the air forced through the condenser will allow the system to operate much more efficiently and it will take the charge much more quickly. You can tell when the can is empty by feeling near the bottom, if it is still cold, there is some left. If warm, it'* all gone and time for the next one. On a warm day, you can charge a 12oz can of 134a in about 4-5 minutes at 50 mph.

If the system was opened, it will need to be evacuated by pulling a good (29"+) vacuum for 45 minutes to remove moisture before you recharge. You may want to consider changing the receiver/dryer if the system was open to the atmosphere for a significant length of time, especially under humid conditions. AC systems cannot tolerate humidity at all.

It is safest to have the system evacuated before you recharge it. That way you can keep track of exactly how much refrigerant you put in so that you don't overcharge it.

Don't forget to put an oil charge in to replace what leaked out before repairs, or you can destroy your compressor.

Good luck
bill buttermore is offline   Reply With Quote
Old 05-22-2004, 05:52 PM   #9
Junior Member
Thread Starter
 
Join Date: May 2004
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
chrisc is on a distinguished road
Default

Thanks for all the feedback...

Put in a new ac compressor control relay... no change.

The system is just not accepting the refrigerant....

Will fiddle and see what happens...

Thanks
chrisc is offline   Reply With Quote
Old 06-24-2004, 10:28 AM   #10
Senior Member
True Car Nut
 
Join Date: Jan 2004
Location: Chicago,IL MWBF '04 SURVIVOR MWBF '05 SURVIVOR Napa Manager
Posts: 3,955
Thanks: 0
Thanked 0 Times in 0 Posts
Kennginn is on a distinguished road
Default

could there be a electrical problem somewhere
Kennginn is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Now accepting Carfax reports. Boreas Lounge 3 12-27-2005 01:45 PM
Eighty-eight A/C recharge vital49 Oldsmobile 3 06-18-2004 06:07 PM
Time to recharge the AC? Custom88 General GM Chat 10 04-16-2004 11:23 PM
Last-minute A/C questions before a recharge acg_ssei 1992-1999 16 08-11-2003 12:07 PM
Air Conditioning Recharge Possible? NJJeepYJ 1987-1991 9 08-07-2003 10:17 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 07:22 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.