Cooling Discuss all of the aspects of cooling that you can think of! Radiators, transmissions, electric fans, etc.

Air Conditioning Question

Thread Tools
 
Search this Thread
 
Old 07-03-2009, 01:40 AM
  #1  
Member
Thread Starter
 
BladeX10's Avatar
 
Join Date: Jul 2008
Posts: 279
Likes: 0
Received 0 Likes on 0 Posts
Car: 1991 RS v8
Air Conditioning Question

My car is blowing out regular temperature air out.. Id like to have it fixed for this hot CA summer heat. What would i need to do? Its a 91 RS
Old 07-03-2009, 01:43 AM
  #2  
Member
iTrader: (2)
 
1989IROC-Z5.7L's Avatar
 
Join Date: Dec 2008
Location: North, Texas
Posts: 176
Likes: 0
Received 0 Likes on 0 Posts
Car: 1987 Buick WE4 Regal
Engine: 3.8L IC Turbo
Transmission: 200 4R Auto O/D
Axle/Gears: 3.42 posi
Re: Air Conditioning Question

How did it quit working and when.
Old 07-03-2009, 01:59 AM
  #3  
Member
Thread Starter
 
BladeX10's Avatar
 
Join Date: Jul 2008
Posts: 279
Likes: 0
Received 0 Likes on 0 Posts
Car: 1991 RS v8
Re: Air Conditioning Question

Bought it like this so i really have no idea
Old 07-03-2009, 06:08 AM
  #4  
Member
 
hot92RS's Avatar
 
Join Date: May 2006
Location: Jupiter, Florida
Posts: 334
Likes: 0
Received 1 Like on 1 Post
Car: 92 Z-28
Engine: 305 TPI
Transmission: THM700R4
Axle/Gears: 2.73
Re: Air Conditioning Question

We're going to assume all the components are still under the hood, right? I would start w/ the compressor. Depending on how long it has not been charged w/ freon, you may need to replace the compressor. Any noise coming from the compressor? It may have just leaked out and need to be recharged. Can you legally do that in CA?
Old 07-03-2009, 01:50 PM
  #5  
Member
Thread Starter
 
BladeX10's Avatar
 
Join Date: Jul 2008
Posts: 279
Likes: 0
Received 0 Likes on 0 Posts
Car: 1991 RS v8
Re: Air Conditioning Question

Yeah everything is there.. No noise that i can think of.. Just blows out hot air.. It starts off hot and it gets ALITTLE bit cooler but its still not cold
Old 07-03-2009, 02:03 PM
  #6  
Junior Member
 
armdale's Avatar
 
Join Date: Jul 2009
Location: West Virginia
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Car: 1984 Trans Am
Engine: 5.0 Litre H.O Modified
Transmission: 5 Speed Manual
Axle/Gears: 3.73 Limited Slip Posi-Trac
Re: Air Conditioning Question

1) Check to see if the electromagnetic clutch works. This is where the belt pulley is. With the air conditioner turned on you will see the back half of the pulley turning. Current makes the clutch squeeze the pulley and then the compressor turns. This could be a fuse if it dosn't work;
2) A low charge could be the problem. A service shop is needed here.
3) The condenser is freezing up/ Incorrect charge or other problem. Also it needs service in a shop.

Last edited by armdale; 07-03-2009 at 03:32 PM. Reason: typo
Old 07-03-2009, 03:20 PM
  #7  
Member
iTrader: (2)
 
1989IROC-Z5.7L's Avatar
 
Join Date: Dec 2008
Location: North, Texas
Posts: 176
Likes: 0
Received 0 Likes on 0 Posts
Car: 1987 Buick WE4 Regal
Engine: 3.8L IC Turbo
Transmission: 200 4R Auto O/D
Axle/Gears: 3.42 posi
Re: Air Conditioning Question

Like stated above, you need to check and see if the clutch on the compressor is locking in.
  1. Start the car with the ac off.
  2. Look at the compressor to see that the clutch is not turning.
  3. Turn the ac on, check again to see if the clutch is locked in and turning.
  4. Watch to see if the clutch cycles. (locks/unlocks)
  5. If the clutch is cycling too often, means system is low on refrigerant (R12 or 134A).
  6. If clutch will not lock in, system is too low for pressure switch to work.
Report findings.
Old 07-03-2009, 03:43 PM
  #8  
Junior Member
 
DENCOUCH's Avatar
 
Join Date: Mar 2009
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Re: Air Conditioning Question

Originally Posted by armdale
1) <snipped stuff>
3) The condenser is freezing up/ Incorrect charge or other problem. Also it needs service in a shop.
never witnessed a condenser icing up. plenty of evaporators tho.

slap on a gauge pack & see what the charge is, that would be the first thing I would do. If the charge is okay, then I would check the control circuit to see if a demand was being made for conditioned air.

There is not a whole bunch of parts that go into creating an A/C system. Check out the charge first tho... a good place to start because stuff won't work right (low pressure cut out for example) if you have no or a low charge.
Old 08-18-2011, 08:19 PM
  #9  
Junior Member
 
brandon lee's Avatar
 
Join Date: Aug 2011
Location: Oklahoma
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Car: 87 IRoc Z
Engine: 350 tune port L9
Transmission: 700R4
Re: Air Conditioning Question

i have a question about my ac it only comes out the defrost but under the hood it feels like air is coming out of the air box and it feels like it is coming out of the vent under the windshield by the passenger any body no what i need to do
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Vintageracer
Camaros for Sale
12
01-10-2020 05:33 PM
Caspar
TPI
24
06-19-2016 11:19 PM
ezobens
DIY PROM
8
08-19-2015 10:29 PM
redmaroz
LTX and LSX
7
08-16-2015 11:40 PM
jackhammer
Cooling
6
08-15-2015 10:04 PM



Quick Reply: Air Conditioning Question



All times are GMT -5. The time now is 01:58 AM.