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Another DIY A/C charging/recharging question S90-V90 1998

posted by  RK on  Thu Apr 17 05:19 CST 2003
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Thanks! Based on the numbers you provided I can at least confirm that my pressostat is working. I now also understand why the compressor was not cycling when I charged the system: the pressure was always around 35 psi and did not reach the point (45 psi) when it cuts itself off. Could it be because it was too hot outside? Should I try to measure the pressure on a colder day? Generally, what is the relationship between the outside temperature and the pressure in the A/C system?






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