whar does it mean if my r hisses after unning the air conditioner then turning off car

1994 OLDSMOBILE CIERA
180,000 MILES
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GEEGEE53
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what does it mean if my car hisses after running the air conditioner when i turn it off?
Jun 18, 2012 at 10:57 PM
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ASEMASTER6371
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you either have a leak in the freon or it is the pressure equalizing after turned off.

Roy
Jun 18, 2012 at 11:07 PM