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Old 06-18-2007, 05:53 PM   #1
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Default AC Not Very Cold

I had my air conditioner in my 92 bonneville se changed over mid summer last year. It blew cold just fine. This year, it seems to take forever to cool the interior of the car when it'* hot outside. In the morning it works just fine. What should the temperature coming out of the vents when it'* 90 degrees outside. Mine is between 60 - 63 degrees. In the morning or evening, its around 53 degrees. Do I have simply have a freon problem?
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Old 06-18-2007, 06:07 PM   #2
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You might just need to recharge the system, but if you had the system converted, you don't want freon, you want Refrigerant 134a. you can buy it from nearly all automotive supply stores. Do make sure to get a pressure tester tho to make sure you don't overfill the system.
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Old 06-18-2007, 06:32 PM   #3
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For your 92? I'll move this to the right section. This section is for the 2000-2005.
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Old 06-18-2007, 07:31 PM   #4
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Quote:
Originally Posted by willwren
For your 92? I'll move this to the right section. This section is for the 2000-2005.
My bad ... I thought I did post it the 92 - 99 forum. .... I also thought I kissed my wife before I went to work today!
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Old 06-18-2007, 07:44 PM   #5
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Malatu,

You are probably getting the same amount of temperature drop at the vents...it'* just that when you're running the car in the morning the cabin air temp is about 10 degrees cooler, so if it starts out 10 degrees cooler it stays 10 degrees cooler.

You could be low on freon..are you R12 or did you convert to R134? If R134 you can get it at a Parts Store. To be sure of what'* going on, you need to put a set of gauges on the system and see what pressures you are running on the high and low side. If you add refrigerant without knowing if you're low you can make it even less efficient.

You could also have a problem with a cooling fan, or a plogged condenser. It could be plogged up externally...lot'* of debris in the fins...or there could be restrictions internally preventing the refrigerant from properly traveling through the condenser and disapating the heat. Try running a stream of water on to the condenser in front of the radiator and see if your system begins to cool better, that could indicate a problem in that area.

You might also have a problem with a air-mix door not closing all the way and letting to much outside air in.


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Old 06-18-2007, 08:19 PM   #6
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Quote:
Originally Posted by spit
Malatu,

You are probably getting the same amount of temperature drop at the vents...it'* just that when you're running the car in the morning the cabin air temp is about 10 degrees cooler, so if it starts out 10 degrees cooler it stays 10 degrees cooler.

You could be low on freon..are you R12 or did you convert to R134? If R134 you can get it at a Parts Store. To be sure of what'* going on, you need to put a set of gauges on the system and see what pressures you are running on the high and low side. If you add refrigerant without knowing if you're low you can make it even less efficient.

You could also have a problem with a cooling fan, or a plogged condenser. It could be plogged up externally...lot'* of debris in the fins...or there could be restrictions internally preventing the refrigerant from properly traveling through the condenser and disapating the heat. Try running a stream of water on to the condenser in front of the radiator and see if your system begins to cool better, that could indicate a problem in that area.

You might also have a problem with a air-mix door not closing all the way and letting to much outside air in.


Spit
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