A/C Problem--compressor/cooling fan cut-out. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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

Reply
 
 
 
Thread Tools Search this Thread
Old 12-05-2005, 11:51 AM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Apr 2005
Posts: 243
Thanks: 0
Thanked 3 Times in 3 Posts
dandyd is on a distinguished road
Default A/C Problem--compressor/cooling fan cut-out.

My A/C compressor keeps cutting out along with the cooling fans. I've replaced all the sensors and checked the refrig. level to make sure it'* within specs. When I disconnect the battery and clear out the ECM, then it begins to work again and will work from several hours to several days before the problem appears again. This car has climate control and the controller has recently been changed out as well with no luck in correcting the problem. I'm out of ideas.......anyone have a few other ideas I could check? Thanks.
dandyd is offline   Reply With Quote
Old 12-05-2005, 11:55 AM   #2
Senior Member
True Car Nut
 
Join Date: May 2005
Location: _Phoenix, AZ_ _WCBF '05, '06, '07 Survivor_ ____NEBF '07 Remnant___
Posts: 3,448
Thanks: 0
Thanked 0 Times in 0 Posts
Echo SSEI is on a distinguished road
Default

What Make/Model/Year/Trim Level car is this happening on?
Echo SSEI is offline   Reply With Quote
Old 12-05-2005, 01:40 PM   #3
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

Try replacing the Compressor clutch relay and see if that solves the problem...

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 12-06-2005, 02:33 PM   #4
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Apr 2005
Posts: 243
Thanks: 0
Thanked 3 Times in 3 Posts
dandyd is on a distinguished road
Default Reply

It'* a '91 Olds Regency '98 Elite.

Also, where is the compressor clutch relay? Is it on the bank of relays on the firewall....and which one is it?

Thanks
dandyd is offline   Reply With Quote
Old 12-06-2005, 02:39 PM   #5
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Where is the pressure switch on that car? In the vicinity of the alternator like ours? Try jumpering that switch and see if the compressor stays on. If that solves your problem, the pressure switch is bad or you're low on R12.
willwren is offline   Reply With Quote
Old 12-06-2005, 02:44 PM   #6
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

The pressure switch can be easily jumped out by unplugging the connector from the receiver dryer and simply using alligator clips to complete the circuit between the leads on the harness. That'* how I do it...even on my 79 T/A.
vital49 is offline   Reply With Quote
Old 12-06-2005, 07:24 PM   #7
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Apr 2005
Posts: 243
Thanks: 0
Thanked 3 Times in 3 Posts
dandyd is on a distinguished road
Default Reply

The low pressure switch is on the side of the receiver/dryer. I have jumped the connection, but when the ECM cuts it out even that will not make it work. I have to clear the codes by disconnecting the neg. terminal on the battery. Then it will work again. Also you have to be careful about jumpiing the low pressure switch as this will cause the evaporator to freeze up and you'll cooling efficancy. Why do I need it to work now in December? The defrost uses the compressor....and when the car sits in the sun all day it is still a bit warm in the car.

Thanks for any help.
dandyd is offline   Reply With Quote
Old 12-06-2005, 07:47 PM   #8
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

Ya, you don't want to jump out the low refrigerant sensor unless you're in the process of filling the system. If it'* not jumpered out then the system will never accept any more freon. If you're not filling the system, it'* a good way to smoke the compressor!

Back in my real cheap days, I used to unplug the power lead to the compressor so that it wouldn't kick on with the defroster. It was one less accessory being used that would help me save gas. Think about it...cars without a/c (my Cheby p/u for ie) will defrost just fine without the compressor kicking on.
vital49 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Weird Cooling fan/ Engine coolant temp. sensor problem crazyeyeskilla Oldsmobile 7 01-29-2014 12:06 AM
Tranny Problem after tryin cooling fan override BonEvilSSEi 1992-1999 6 08-05-2004 11:35 PM
Cooling Fan Problem MisLeD YoUtH 1992-1999 11 07-24-2003 07:30 PM
cooling fan question egladman General GM Chat 2 07-08-2003 12:03 AM
Cooling fan Phantom 1992-1999 1 01-27-2003 12:16 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 04:22 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.