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Join Date: Dec 2009
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AC repair help

So it is getting pretty hot around here, and the ac on my 1995 911 is weak at best. I have recharged it twice, up to about 35 psi. Even immediately after recharging it does not cool very well. After a few days (a week?) the pressure drops to 25 psi, or less. Any advice on how to proceed to find a leak, which hopefully may be somewhere that I could actually repair without extraordinary effort? I have a vacuum pump and AC guage manifold.
thanks.

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Dave, in western MA.
1995 993
Old 07-12-2010, 07:27 AM
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you may need to put a dye in the system and then use a black light to locate it. One thing you should replace is the drier tank.
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Tony G.
2006 Cayman S
1973 914 1.7 project
"Rules are for the interpretation of wise men and the obedience of fools." Colin Chapman, Founder, Lotus F1
Old 07-12-2010, 08:02 AM
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Location: MYR S.C.
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you can look for the wet spot. usually dirt will collect where the leak is if it is bad enough. another thing to do is use a sniffer. if the evap or expansion valve is leaking, sniffing the vents will let you know. found a bad evap in my brothers 930, goona check his volvo today.

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Old 07-12-2010, 09:58 AM
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