patcal Posted September 18, 2004 Share Posted September 18, 2004 On my 95 Legacy Outback the A/C clutch cycles on & off as I drive or sit & idle. The air is cold but I have never seen a compressor cycle unless there was a problem. I have a little froth in the sight glass. Any suggestions? Is this normal? Thanks. Quote Link to comment Share on other sites More sharing options...
Setright Posted September 19, 2004 Share Posted September 19, 2004 Well, the compressor is supposed to cycle on and off, stops things freezing. Froth in the sighglass is a sign that you need to top off, or replace the fluid. Quote Link to comment Share on other sites More sharing options...
Aubrey Posted September 19, 2004 Share Posted September 19, 2004 The AC compression on my 91 Legacy also sometimes cycles on and off when I'm idling or even driving in very hot weather (35 degrees C) around town. I'm not sure if this is normal, but it sure doesn't help cool down the car! I assume it's doing it to protect the AC system becuase maybe it can't handle the heat. I don't know. Quote Link to comment Share on other sites More sharing options...
avk Posted September 19, 2004 Share Posted September 19, 2004 Legacy compressors are variable-displacement type. They can cycle but it's not designed as the main way of regulating the temperature. Quote Link to comment Share on other sites More sharing options...
RallyKeith Posted September 19, 2004 Share Posted September 19, 2004 MY 95 does it all the time. It's normal. Quote Link to comment Share on other sites More sharing options...
patcal Posted September 19, 2004 Author Share Posted September 19, 2004 Thanks for the replies guys. I am going to buy a kit to fill it up. The kit comes with a pressure gauge so I should be able to get a accurate reading of how much R-134 to put in. I willl see what that does first. Anything more is probably out of my league. Quote Link to comment Share on other sites More sharing options...
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