A/C question
Champion
Joined: May 2007
Posts: 2,687
Likes: 0
From: Northern Virginia
What kind of temperatures are you having? The A/C high side pressure should be between 150 and 250 at 70 degrees, 200 and 300 psi at 80 degrees, 250 to 350 at 90 degrees, and 290 to 390 at 100 degrees. If you find you have all the pressures good and it still can't get cold air you can take it to a dealer or other hvac shop and have the refrigerant removed to check for high moisture or refrigerant oil in the system, as this can cause abnormal operation. If everything is normal and you need more cold then you could put a shutoff valve on your heater core coolant input line.
Sounds like, as others have said, you need a recharge.
Thread Starter
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Veteran
Joined: Jan 2009
Posts: 480
Likes: 0
From: Southwest, MS
We have been having 90 to 95 degree weather. its so humid it makes it feel like 100 or more. Thanks for the help. Definitely helped me lean towards the low refrigerant. I just hope thats what it is.
