johnnyk Posted September 23, 2005 Share Posted September 23, 2005 Ive had problems keeping the AC on my 91 legacy wagon going for many years It hasnt worked right as long as ive had the car recently I got it hooked back up and freshly charged It worked for an hour or so and then I heard the familiar sounds of what sound like relays clicking on and off inside the dash. Has anyone had a similar experience? Ive had a couple different shops look at it and its always turned out the same with no real answers. Any ideas? Quote Link to comment Share on other sites More sharing options...
NoahDL88 Posted September 23, 2005 Share Posted September 23, 2005 have you had it pressure tested, seems like you are loosing R-12 at a very rapid rate, which is causing your low pressure sensor to shut off the relay, which gives you your clicking. Quote Link to comment Share on other sites More sharing options...
nipper Posted September 24, 2005 Share Posted September 24, 2005 You need a leak test. Its simple to do, and usually the #1 cause is a bad o ring. Unfortunitly it sounds like a very fast leak so you will need a Sniffer to do it as opposed to a slow leak with soap bubbles (poor mans sniffer). Joe Quote Link to comment Share on other sites More sharing options...
kevinC Posted September 24, 2005 Share Posted September 24, 2005 I have had the expansion valve leak on 1990 legacy, it would leak out overnight. it is located inside the dash. and also there is a small threaded plug on the bottom of the compressor (calsonic compressor)that was barely leaking. Use soappy water and also look for oily spots around the lines and check the compressor clutch to see if it is wet(oily). Quote Link to comment Share on other sites More sharing options...
johnnyk Posted September 24, 2005 Author Share Posted September 24, 2005 --- Quote Link to comment Share on other sites More sharing options...
johnnyk Posted September 24, 2005 Author Share Posted September 24, 2005 they have tested it and say it doesnt leak not sure which method they used but nobodys been able to cure it this time they said it was coroded connections its weird sometimes since this last charge it blows nice and cold then fades out. then the next day its back I havent noticed anything around the pump May tear into the dash this weekend to cure some bad connections in the stereo. wonder what all the cliking going on under the dash is? the expansion valve? hmmm thanks for the good clues now that winters here i better get it fixed have been without it so long it was a real luxury ride to have it even for a short while Quote Link to comment Share on other sites More sharing options...
Gnuman Posted September 25, 2005 Share Posted September 25, 2005 they have tested it and say it doesnt leak not sure which method they used but nobodys been able to cure it this time they said it was coroded connections its weird sometimes since this last charge it blows nice and cold then fades out. then the next day its back I havent noticed anything around the pump May tear into the dash this weekend to cure some bad connections in the stereo. wonder what all the cliking going on under the dash is? the expansion valve? hmmm thanks for the good clues now that winters here i better get it fixed have been without it so long it was a real luxury ride to have it even for a short while behind the glove box is where the condenser lives. In that is a thermqal relay that keeps the A/C from freezing up by getting too cold. that is going out. that is what is causing the fast relay click. I had mne go out just after I converted to R134a. PM me if you want me so send you one to try out. Or you could go to the stealership to get them to sell you one. . . Quote Link to comment Share on other sites More sharing options...
johnnyk Posted September 28, 2005 Author Share Posted September 28, 2005 thanks gnu! the clicking has stopped for now now that its cooling off Il probably let it slide till spring but now I know where to look!! behind the glove box is where the condenser lives. In that is a thermqal relay that keeps the A/C from freezing up by getting too cold. that is going out. that is what is causing the fast relay click. I had mne go out just after I converted to R134a. PM me if you want me so send you one to try out. Or you could go to the stealership to get them to sell you one. . . Quote Link to comment Share on other sites More sharing options...
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