A/C performance - Saab 900 Bulletin Board - Saabnet.com
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A/C performance
Posted by Monster (more from Monster) on Sun, 28 Apr 2002 08:58:02
In Reply to: stock AC performance ? (89 900S sedan), Bruce A, Sat, 27 Apr 2002 20:39:34
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Hi, Bruce.
I just did this work on my car so I've learned a little about this system. You said you get annual recharges and I'm curious about that. Your system shouldn't lose refrigerant from year to year. If it does, you have a leak somewhere and it should be fixed. If you're using the original R-12 refrigerant, your annual recharges are going to start getting pretty expensive, too.
There is a minimal temperature at which the compressor doesn't kick on, but it's down close to freezing. At 50+ degrees Fahrenheit, it should come on.
If the system is working properly, you should see between 20 and 30 degrees temperature differential between output air and ambient. You can stick a meat thermometer into one of the center vents and read it out that way. I have heard that R-12 gives about 5 degrees cooler performance than R-134a, but never did a before/after comparison with the same machine to see this for myself.
- = M = -
posted by 208.63.213...
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