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850 air conditioner quits cooling on hot days 850 1994

posted by  KlausC on  Sun Jan 16 15:02 CST 2005
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

Get a pressure gauge and hook it up to the low pressure side. Turn the AC on and watch it cycle on and off at 15 to 27 pounds? About that. When it stops cycling, note that you no longer have enough pressure to cycle the clutch on the compressor. The low pressure line is cold before it goes through the firewall and the return is getting warmer. You need to add more R134a, about 1/2 can.
Like all 850's, they leak. Slowly, like the lines cannot handle the high pressure when the engine has been turned off.
If the above doesn't make sense, email me.
Klaus
--
98 V70Rawd(101Kmi), 95 854T(85K mi), 75 164E(173K mi)






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