Recharging A/C
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Junior User
Joined: Jan 2011
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Recharging A/C
Good evening gents. Have been reading forum for months and love it, now I have my first (not last Im sure) tech question. 96 PS and A/C blows warm. I know its not the right time of year for most but it was in the high 70's a few days ago here in the great sunshine state and noticed the A/C not functioning correctly. The compressor kicks on and off. I bought one of those recharge in bottle from the parts store, however I cant seem to locate the Low Pressure port. The only port I found was on the driver side up front by the radiator. Since the refill bottle will not fit on that fitting I guess this is the high pressure side. No shop manual so I figured one of you fine gentlemen would be able to help out. Thanks in advance.
Elder User
Joined: Aug 2009
Posts: 869
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From: Michigan
Its called an accumulator. its purpose is to keep any liquid refrigerant (freon) from getting back to the compressor.
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Junior User
Joined: Jan 2011
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Thank you very much, I found it. The funny thing is when I checked the compressor the first time it was clicking on and off. Now this time it looked like it tried to kick the clutch in and it spun for maybe 2-3 rotaions and quit. The bottle states that if the compressor does not kick on after 3 min than put half of the bottle in and see what happens. The pressure gauge is reading 70psi and now I am worried about over charge. How does the compressor know when to kick on? 
Posting Guru
Joined: Jan 2006
Posts: 1,605
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From: Elkhorn, WI
That's exactly what mine did. It took 2 full bottles. IIRC the refrigerant bottle has to be turned upside down when you do it to get the liquid out of the can. After one bottle I was worried about overcharge too but it took the 2nd bottle and didn't raise the pressure much
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