AC is not cold, tried to recharge it but pressure is OK. There is some condensation in
05-16-2006, 12:09 AM
#1
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AC is not cold, tried to recharge it but pressure is OK. There is some condensation in
the pipe leading from the engine bay, through the firewall. I was told the filter should be replaced, but I can find it! Is it inside the black plastic box? It seems to be sealed... Thanks for any clues.
05-16-2006, 12:22 PM
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68psi is static pressure (a/c off) and it tells little about system charge level
the a/c system will have the same static pressure if it has a few ounces of r134a or a full charge. The only thing static pressure can tell you is if there is air or other gases mixed in with the r134a.
05-16-2006, 01:00 PM
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r12 has a similiar pressure/temperature relationship as r134a though not identical
the low cost way to check refrigerant purity in my recovery tank is to take a accurate temp reading and pressure reading and then compare to the p/t chart. Should match if it's pure. Just like an a/c system, the pressure in my recovery tank will be the same if its 1/8 full or completely full.
The WRX is running as it should, no more mis-fire codes!<ul><li><a href="http://www.aircondition.com/pressure.htm">pressure/temp chart for r12, r134a</a></li></ul>
The WRX is running as it should, no more mis-fire codes!<ul><li><a href="http://www.aircondition.com/pressure.htm">pressure/temp chart for r12, r134a</a></li></ul>
05-16-2006, 01:14 PM
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so i really should take it to a pro then. R12 work is just so expensive now
i got some cans and recharged it myself and it definitely works better than before. i didn't evacuate the system, i just filled it up until it was operating in the proper pressure range. From what i understand though, it seems that pressure doesn't correlate to charge level.
i'm just afraid to take it to a pro because he'll tell me i have a leak somewhere that will cost a rediculous amount of money to fix. I know the A/C isn't working at full power though.
i'm just afraid to take it to a pro because he'll tell me i have a leak somewhere that will cost a rediculous amount of money to fix. I know the A/C isn't working at full power though.
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05-16-2006, 02:01 PM
#9
Don't be a pr!ck - If it's less than 68psi @72F then there isn't enough anything and it's obviously
in need of a recharge. Check the Bentley Service Manual if you need a recap on the procedures.
05-16-2006, 02:26 PM
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R12 is somewhere near $500 a gallon, last time I checked.
R134a is cheaper than gasoline, almost. 
I had my 80q changed over to R134a after going through two full discharge and charge cycles where the A/C worked for about a week after each cycle. Been working like a champ since, even though the conversion cost $275.
I had my 80q changed over to R134a after going through two full discharge and charge cycles where the A/C worked for about a week after each cycle. Been working like a champ since, even though the conversion cost $275.