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240-1990. recharging a/c using interdynamic single guage. Guage stops at top of green zone(25) and wont take any more.

The A/c is blowing cold inside car, but according to instructions needle should stop in The "blue zone". In other words, according to the guage, system isnt full. Has anyone used this guage before? Help! How to proceed.

Thanks

Lawrence








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    240-1990. recharging a/c using interdynamic single guage. Guage stops at top of green zone(25) and wont take any more.

    There's no way to tell if the system's "full" without 2 gauges, a thermometer, and a chart of temp. vs pressure.
    Cold is what you're looking for.








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      240-1990. recharging a/c using interdynamic single guage. Guage stops at top of green zone(25) and wont take any more.

      I guess I need to get the guages.

      It is cold though!

      Thanks







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