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Old 08-14-2002, 04:38 PM
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csnow csnow is offline
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Join Date: May 2002
Location: Mass
Posts: 1,127
Agree that education is a good thing, but just to add to what has been said:

While the gas goes in on the low side, it is the high side pressure that should be measured to determine when the system is fully charged (with a partial recharge). This value is specific to your AC system, and varies substantially based upon ambient temperature.

That is one reason why it is better to use a real manifold gauge set, as Larry mentioned.
1986 300E 5-Speed 240k mi.
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